Ian A Gardner

Summary

Affiliation: University of California
Country: USA

Publications

  1. ncbi request reprint Bayesian modeling of animal- and herd-level prevalences
    A J Branscum
    Department of Statistics, University of California, Davis, CA 95616, USA
    Prev Vet Med 66:101-12. 2004
  2. doi request reprint Risk factors for Toxoplasma gondii infection in wild rodents from central coastal California and a review of T. gondii prevalence in rodents
    Haydee A Dabritz
    School of Veterinary Medicine, University of California, Vet Med III A, Davis, California 95616, USA
    J Parasitol 94:675-83. 2008
  3. doi request reprint Consensus-based reporting standards for diagnostic test accuracy studies for paratuberculosis in ruminants
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Prev Vet Med 101:18-34. 2011
  4. doi request reprint Statistical evaluation of test accuracy studies for Toxoplasma gondii in food animal intermediate hosts
    I A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Zoonoses Public Health 57:82-94. 2010
  5. ncbi request reprint Empirical and theoretical evidence for herd size as a risk factor for swine diseases
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Anim Health Res Rev 3:43-55. 2002
  6. ncbi request reprint Conditional dependence between tests affects the diagnosis and surveillance of animal diseases
    I A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Prev Vet Med 45:107-22. 2000
  7. ncbi request reprint An epidemiologic critique of current microbial risk assessment practices: the importance of prevalence and test accuracy data
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California 95616, USA
    J Food Prot 67:2000-7. 2004
  8. doi request reprint Quality standards are needed for reporting of test accuracy studies for animal diseases
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Prev Vet Med 97:136-43. 2010
  9. ncbi request reprint Receiver-operating characteristic curves and likelihood ratios: improvements over traditional methods for the evaluation and application of veterinary clinical pathology tests
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
    Vet Clin Pathol 35:8-17. 2006
  10. ncbi request reprint Evaluation of two Toxoplasma gondii serologic tests used in a serosurvey of domestic cats in California
    Haydee A Dabritz
    School of Veterinary Medicine, University of California, One Shields Avenue, Davis, California 95616, USA
    J Parasitol 93:806-16. 2007

Detail Information

Publications114 found, 100 shown here

  1. ncbi request reprint Bayesian modeling of animal- and herd-level prevalences
    A J Branscum
    Department of Statistics, University of California, Davis, CA 95616, USA
    Prev Vet Med 66:101-12. 2004
    ..Finally, we considered estimation of animal-level prevalence based on pooled samples...
  2. doi request reprint Risk factors for Toxoplasma gondii infection in wild rodents from central coastal California and a review of T. gondii prevalence in rodents
    Haydee A Dabritz
    School of Veterinary Medicine, University of California, Vet Med III A, Davis, California 95616, USA
    J Parasitol 94:675-83. 2008
    ..30%, respectively). Factors associated with an increased risk for T. gondii seropositivity in rodents were capture location >or=200 m from residential housing and adult age...
  3. doi request reprint Consensus-based reporting standards for diagnostic test accuracy studies for paratuberculosis in ruminants
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Prev Vet Med 101:18-34. 2011
    ....
  4. doi request reprint Statistical evaluation of test accuracy studies for Toxoplasma gondii in food animal intermediate hosts
    I A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Zoonoses Public Health 57:82-94. 2010
    ..We make recommendations for statistical analysis and reporting of test evaluation studies for T. gondii in food animals based on our own experiences and those of others...
  5. ncbi request reprint Empirical and theoretical evidence for herd size as a risk factor for swine diseases
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Anim Health Res Rev 3:43-55. 2002
    ....
  6. ncbi request reprint Conditional dependence between tests affects the diagnosis and surveillance of animal diseases
    I A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Prev Vet Med 45:107-22. 2000
    ....
  7. ncbi request reprint An epidemiologic critique of current microbial risk assessment practices: the importance of prevalence and test accuracy data
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California 95616, USA
    J Food Prot 67:2000-7. 2004
    ..Guidelines are proposed for more transparent incorporation of test data into microbial risk assessments...
  8. doi request reprint Quality standards are needed for reporting of test accuracy studies for animal diseases
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Prev Vet Med 97:136-43. 2010
    ..Finally, the contributions of Dr. Hollis Erb to improvements in methodological and reporting qualities of test accuracy studies in Preventive Veterinary Medicine are described...
  9. ncbi request reprint Receiver-operating characteristic curves and likelihood ratios: improvements over traditional methods for the evaluation and application of veterinary clinical pathology tests
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, Davis, CA, USA
    Vet Clin Pathol 35:8-17. 2006
    ..We use ROC analysis and calculate likelihood ratios to evaluate the performance of tests reported in 2 articles previously published in this journal...
  10. ncbi request reprint Evaluation of two Toxoplasma gondii serologic tests used in a serosurvey of domestic cats in California
    Haydee A Dabritz
    School of Veterinary Medicine, University of California, One Shields Avenue, Davis, California 95616, USA
    J Parasitol 93:806-16. 2007
    ..Accounting for Se, Sp, and test covariances, age-adjusted seroprevalence was 45.0%. The odds for T. gondii seropositivity were 12.3-fold higher for cats aged >12 mo compared with cats aged <6 mo...
  11. ncbi request reprint Risk of transplacental transmission of Sarcocystis neurona and Neospora hughesi in California horses
    Paulo C Duarte
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, California 95616, USA
    J Parasitol 90:1345-51. 2004
    ..2%. In conclusion, there was no detectable risk of transplacental transmission of S. neurona and N. hughesi. Prevalence of antibodies against both parasites in mares increased with age...
  12. ncbi request reprint Chemical inactivation of Toxoplasma gondii oocysts in water
    Katlyn E Wainwright
    Department of Pathology, Microbiology and Immunology, 1 Shields Avenue, School of Veterinary Medicine, University of California, Davis, California 95616, USA
    J Parasitol 93:925-31. 2007
    ..Results of the chemical exposure experiments indicate that neither sodium hypochlorite nor ozone effectively inactivate T. gondii oocysts, even when used at high concentrations...
  13. ncbi request reprint Detection of Toxoplasma gondii-like oocysts in cat feces and estimates of the environmental oocyst burden
    Haydee A Dabritz
    Department of Pathology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    J Am Vet Med Assoc 231:1676-84. 2007
    ..To estimate the analytic sensitivity of microscopic detection of Toxoplasma gondii oocysts and the environmental loading of T gondii oocysts on the basis of prevalence of shedding by owned and unowned cats...
  14. ncbi request reprint Use of age and milk production data to improve the ability of enzyme-linked immunosorbent assay test results to predict Mycobacterium avium ssp. paratuberculosis fecal culture status
    Roy D Berghaus
    Department of Population Health and Reproduction School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    J Vet Diagn Invest 18:233-42. 2006
    ..For a given ELISA S/P ratio, older cows and those with lower 305 ME milk production relative to other cows in the herd were significantly more likely to be shedding MAP in their feces at the end of lactation...
  15. ncbi request reprint Evaluation of methods for improved detection of Cryptosporidium spp. in mussels (Mytilus californianus)
    Woutrina A Miller
    Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, 95616, USA
    J Microbiol Methods 65:367-79. 2006
    ..TaqMan PCR was comparable to conventional PCR for detection of C. parvum oocysts in mussels and additionally allowed for automated testing, high throughput, and semi-quantitative results...
  16. ncbi request reprint Incidence and effects of West Nile virus infection in vaccinated and unvaccinated horses in California
    Ian A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Vet Res 38:109-16. 2007
    ....
  17. doi request reprint The combination of abundance and infection rates of Culicoides sonorensis estimates risk of subsequent bluetongue virus infection of sentinel cattle on California dairy farms
    Christie E Mayo
    Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Vet Parasitol 187:295-301. 2012
    ....
  18. ncbi request reprint Simulation model for evaluation of testing strategies for detection of paratuberculosis in midwestern US dairy herds
    Saraya Tavornpanich
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616 8737, USA
    Prev Vet Med 83:65-82. 2008
    ..ELISA alone was a sensitive and low-cost testing method; however, without confirmatory fecal culture, testing 30 cows in non-infected herds yielded HSp of 21% and 91% for EA and EB, respectively...
  19. ncbi request reprint Risk of postnatal exposure to Sarcocystis neurona and Neospora hughesi in horses
    Paulo C Duarte
    Departments of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 65:1047-52. 2004
    ..To estimate risk of exposure and age at first exposure to Sarcocystis neurona and Neospora hughesi and time to maternal antibody decay in foals...
  20. ncbi request reprint Effects of blood contamination of cerebrospinal fluid on results of indirect fluorescent antibody tests for detection of antibodies against Sarcocystis neurona and Neospora hughesi
    Carrie J Finno
    Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    J Vet Diagn Invest 19:286-9. 2007
    ..The IFAT performed on CSF is reliable for testing horses for equine protozoal myeloencephalitis caused by S. neurona or N. hughesi, even when blood contamination causes the RBC concentration in CSF to be up to 10,000 RBCs/microl...
  21. doi request reprint Cost-effectiveness of diagnostic strategies to identify Mycobacterium avium subspecies paratuberculosis super-shedder cows in a large dairy herd using antibody enzyme-linked immunosorbent assays, quantitative real-time polymerase chain reaction, and bacte
    Sharif S Aly
    Veterinary Medicine Teaching and Research Center, University of California, Davis, 18830 Road 112, Tulare, CA 93724, USA
    J Vet Diagn Invest 24:821-32. 2012
    ..Initial qPCR testing of environmental samples from free-stall pens to target cows in pens with the highest MAP bioburden for further testing can improve the cost-effectiveness of strategies for super-shedder identification...
  22. doi request reprint Isolation of Mycobacterium avium subsp. paratuberculosis from waste milk delivered to California calf ranches
    Juliana M Ruzante
    Dairy Food Safety Laboratory, School of Veterinary Medicine, University of California, Davis, California 93274, USA
    Foodborne Pathog Dis 5:681-6. 2008
    ..Dairy herds should be aware that placing calves in specialized off-site calf-raising facilities might not eliminate all possible routes of infection of calves with MAP...
  23. doi request reprint Herd characteristics and management practices associated with seroprevalence of Mycobacterium avium subsp paratuberculosis infection in dairy herds
    Saraya Tavornpanich
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 69:904-11. 2008
    ..To investigate herd characteristics and management practices associated with a high seroprevalence of Mycobacterium avium subsp paratuberculosis (MAP) in dairy herds in central California...
  24. ncbi request reprint Experimental infection of Peromyscus californicus with Toxoplasma gondii
    Haydee A Dabritz
    School of Veterinary Medicine, University of California, One Shields Avenue, Davis, California 95616, USA
    J Parasitol 93:1360-4. 2007
    ..Parasites were detected most commonly by IHC in spleen (8/8) and brain (6/8). DNA amplification by PCR was most successful from brain, heart, and spleen...
  25. doi request reprint Bayesian estimation of the receiver operating characteristic curve for a diagnostic test with a limit of detection in the absence of a gold standard
    Seyed Reza Jafarzadeh
    Department of Medicine and Epidemiology, University of California, Davis, CA 95616, USA
    Stat Med 29:2090-106. 2010
    ..Exceptions were when there was a high per cent of unquantifiable results (60 per cent) or when AUC was < or =0.6, which indicated a marked overlap between the outcomes in infected and non-infected populations...
  26. ncbi request reprint Risk factors for proximal sesamoid bone fractures associated with exercise history and horseshoe characteristics in Thoroughbred racehorses
    Lucy A Anthenill
    J D Wheat Veterinary Orthopedic Research Laboratory, Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 68:760-71. 2007
    ..To assess individual and combined associations of high-speed exercise and horseshoe characteristics with risk of forelimb proximal sesamoid bone fractures and proximal sesamoid bone midbody fractures in Thoroughbred racehorses...
  27. ncbi request reprint Probability of introduction of exotic strains of bluetongue virus into the US and into California through importation of infected cattle
    Bruce R Hoar
    Department of Medicine and Epidemiology, School of Veterinary Medicine, One Shields Avenue, University of California, Davis, CA 95616, USA
    Prev Vet Med 66:79-91. 2004
    ....
  28. ncbi request reprint Immune responses during pregnancy in heifers naturally infected with Neospora caninum with and without immunization
    Aurélie G Andrianarivo
    Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, 1 Shields Avenue, Davis, CA 95616, USA
    Parasitol Res 96:24-31. 2005
    ..These results indicate that reactivation of a latent infection occurred in the naturally infected heifers, regardless of their immunization status, and was associated with increased parasite-specific antibodies, mainly IgG(2)...
  29. ncbi request reprint Evaluation of microbial culture of pooled fecal samples for detection of Mycobacterium avium subsp paratuberculosis in large dairy herds
    Saraya Tavornpanich
    Departments of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 65:1061-70. 2004
    ..To evaluate sensitivity of microbial culture of pooled fecal samples for detection of Mycobacterium avium subsp paratuberculosis (MAP) in large dairy herds and assess the use of the method for estimation of MAP prevalence...
  30. ncbi request reprint Diagnostic test accuracy and prevalence inferences based on joint and sequential testing with finite population sampling
    Chun Lung Su
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, CA 95616, U S A
    Stat Med 23:2237-55. 2004
    ..Finally, we make recommendations about how small the sample size should be relative to the population size to warrant use of the binomial model for prevalence estimation...
  31. ncbi request reprint Fecal shedding of Mycobacterium avium subsp. paratuberculosis by dairy cows
    Beate M Crossley
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Vet Microbiol 107:257-63. 2005
    ..Reduction in the number of replicate tubes from four would have reduced the sensitivity of fecal culture for Map by approximately 6% (for three tubes) to 12% (for two tubes)...
  32. doi request reprint Variation in Bluetongue virus real-time reverse transcription polymerase chain reaction assay results in blood samples of sheep, cattle, and alpaca
    Barbara P Brito
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, CA 95616, USA
    J Vet Diagn Invest 23:753-6. 2011
    ..Results showed that BTV-specific nucleic acid detection from alpaca blood was consistently 1-2 logs lower than from sheep and cattle blood, and results were similar for each of the 4 BTV serotypes analyzed...
  33. doi request reprint Frequentist and Bayesian approaches to prevalence estimation using examples from Johne's disease
    Locksley L McV Messam
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, CA, USA
    Anim Health Res Rev 9:1-23. 2008
    ..All examples are motivated using Mycobacterium avium subspecies paratuberculosis infection and we provide WinBUGS code for all examples of Bayesian estimation...
  34. doi request reprint On the interpretation of test sensitivity in the two-test two-population problem: assumptions matter
    Wesley O Johnson
    Department of Statistics, University of California, Irvine, CA 92697, USA
    Prev Vet Med 91:116-21. 2009
    ..Without a perfectly specific test, and if the assumption of constant sensitivity fails, the only solution we are aware of would involve incorporating prior information on at least two parameters...
  35. ncbi request reprint Evaluation of cost-effectiveness of targeted sampling methods for detection of Mycobacterium avium subsp paratuberculosis infection in dairy herds
    Saraya Tavornpanich
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 67:821-8. 2006
    ..To investigate the epidemiologic and financial impacts of targeted sampling of subpopulations of cows, compared with random sampling of all cows, for classification of dairy herd infection status for paratuberculosis...
  36. ncbi request reprint Correlation between Herrold egg yolk medium culture and real-time quantitative polymerase chain reaction results for Mycobacterium avium subspecies paratuberculosis in pooled fecal and environmental samples
    Sharif S Aly
    Veterinary Medicine Teaching and Research Center, Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    J Vet Diagn Invest 22:677-83. 2010
    ....
  37. doi request reprint Prevalence of abnormal radiographic findings in 2-year-old Thoroughbreds at in-training sales and associations with racing performance
    Dennis M Meagher
    Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
    J Am Vet Med Assoc 242:969-76. 2013
    ....
  38. doi request reprint Anthropogenic and meteorological factors influence vector abundance and prevalence of bluetongue virus infection of dairy cattle in California
    Christie E Mayo
    Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Vet Microbiol 155:158-64. 2012
    ....
  39. pmc Physical inactivation of Toxoplasma gondii oocysts in water
    Katlyn E Wainwright
    Department of Pathology, Microbiology and Immunology, 1 Shields Avenue, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Appl Environ Microbiol 73:5663-6. 2007
    ..Inactivation of Toxoplasma gondii oocysts occurred with exposure to pulsed and continuous UV radiation, as evidenced by mouse bioassay. Even at doses of >or=500 mJ/cm2, some oocysts retained their viability...
  40. doi request reprint The immune response of foals to natural infection with equid herpesvirus-2 and its association with febrile illness
    Stephanie A Brault
    Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Vet Immunol Immunopathol 137:136-41. 2010
    ..These results support the conclusion that the cellular immune response to EHV-2 may lead to an immunologically mediated disease of foals that is analogous to infectious mononucleosis caused by EBV infection in humans...
  41. ncbi request reprint Clams (Corbicula fluminea) as bioindicators of fecal contamination with Cryptosporidium and Giardia spp. in freshwater ecosystems in California
    Woutrina A Miller
    School of Veterinary Medicine, University of California, Davis, 95616, USA
    Int J Parasitol 35:673-84. 2005
    ..The presence of C. parvum DNA in clams from riverine ecosystems was confirmed with PCR and DNA sequence analysis...
  42. ncbi request reprint Effects of prevalence and testing by enzyme-linked immunosorbent assay and fecal culture on the risk of introduction of Mycobacterium avium subsp. paratuberculosis-infected cows into dairy herds
    Tim E Carpenter
    Department of Medicine and Epidemiology, School of Veterinary Medicine, Davis, CA 95616, USA
    J Vet Diagn Invest 16:31-8. 2004
    ..Testing of random-source cattle, bought as herd replacements, can partially mitigate the risk of introduction of M. a. paratuberculosis but not as well as by using low-prevalence source herds (level-3 VJDHSP), with or without testing...
  43. ncbi request reprint Outdoor fecal deposition by free-roaming cats and attitudes of cat owners and nonowners toward stray pets, wildlife, and water pollution
    Haydee A Dabritz
    Wildlife Health Center, University of California, Davis, CA 95616, USA
    J Am Vet Med Assoc 229:74-81. 2006
    ..To estimate cat population size, management, and outside fecal deposition and evaluate attitudes of cat owners and nonowners to stray animal control, water pollution, and wildlife protection...
  44. ncbi request reprint Temporal detection of equine herpesvirus infections of a cohort of mares and their foals
    Stephanie A Bell
    Equine Viral Disease Laboratory, Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, One Shields Avenue, University of California, Davis, CA 95616, USA
    Vet Microbiol 116:249-57. 2006
    ..Although herpesvirus infections were ubiquitous in this cohort of horses, there were distinct clinical consequences and clear epidemiological differences between infections with the different viruses...
  45. ncbi request reprint Association between findings on palmarodorsal radiographic images and detection of a fracture in the proximal sesamoid bones of forelimbs obtained from cadavers of racing Thoroughbreds
    Lucy A Anthenill
    JD Wheat Veterinary Orthopedic Research Laboratory, Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 67:858-68. 2006
    ..To determine the distribution for limbs and bones in horses with fractures of the proximal sesamoid bones and relationships with findings on palmarodorsal radiographic images...
  46. ncbi request reprint Effects of injury to the suspensory apparatus, exercise, and horseshoe characteristics on the risk of lateral condylar fracture and suspensory apparatus failure in forelimbs of thoroughbred racehorses
    Ashley E Hill
    J D Wheat Veterinary Orthopedic Research Laboratory, Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 65:1508-17. 2004
    ....
  47. doi request reprint Comparison of macrostructural and microstructural bone features in Thoroughbred racehorses with and without midbody fracture of the proximal sesamoid bone
    Lucy A Anthenill
    J D Wheat Veterinary Orthopedic Research Laboratory, Departments of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
    Am J Vet Res 71:755-65. 2010
    ..To compare macrostructural and microstructural features of proximal sesamoid bones (PSBs) from horses with and without PSB midbody fracture to gain insight into the pathogenesis of PSB fracture...
  48. ncbi request reprint Coastal freshwater runoff is a risk factor for Toxoplasma gondii infection of southern sea otters (Enhydra lutris nereis)
    M A Miller
    Department of Pathology, Microbiology and Immunology, 1 Shields Avenue, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Int J Parasitol 32:997-1006. 2002
    ..This study provides evidence implicating land-based surface runoff as a source of T. gondii infection for marine mammals, specifically sea otters, and provides a convincing illustration of pathogen pollution in the marine ecosystem...
  49. ncbi request reprint Estimation of diagnostic-test sensitivity and specificity through Bayesian modeling
    A J Branscum
    Department of Statistics, University of California, One Shields Ave, Davis, CA 95616, USA
    Prev Vet Med 68:145-63. 2005
    ..The WinBUGS code used to fit each model, which is available at http://www.epi.ucdavis.edu/diagnos-tictests/, can be altered readily to conform to different data...
  50. ncbi request reprint Observer variation in visual assessment of forelimb horseshoe characteristics on Thoroughbred racehorses
    Diane K Gross
    J D Wheat Veterinary Orthopedic Research Laboratory, Department of Anatomy, Physiology, and Cell Biology School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 65:1674-9. 2004
    ..To assess the accuracy and reliability of a visual method of evaluating horseshoe characteristics...
  51. ncbi request reprint Modified culture protocol for isolation of Mycobacterium avium subsp. paratuberculosis from raw milk
    Juliana M Ruzante
    Department of Population Health and Reproduction, School of Veterinary Medicine, University of California Davis, Davis, California 95616, USA
    Foodborne Pathog Dis 3:457-60. 2006
    ..479). The two methods had similar detection limits but the modified culture method reduced the time to detect MAP in raw milk for the majority of concentrations...
  52. ncbi request reprint Comparison of a serum indirect fluorescent antibody test with two Western blot tests for the diagnosis of equine protozoal myeloencephalitis
    Paulo C Duarte
    Department of Medicine and Epidemiology, School of Veterinary Medicine, One Shields Avenue, University of California, Davis, CA 95616 8737, USA
    J Vet Diagn Invest 15:8-13. 2003
    ..2% (72.6-95.7%), and 69.2% (52.4-83%), respectively. The overall accuracy of the IFAT was shown to be better than that of the WBs and, therefore, the test has potential for use in the diagnosis of EPM caused by Sarcocystis neurona...
  53. doi request reprint Seasonal Variation and Impact of Waste-Water Lagoons as Larval Habitat on the Population Dynamics of Culicoides sonorensis (Diptera:Ceratpogonidae) at Two Dairy Farms in Northern California
    Christie E Mayo
    Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California Davis, Davis, California, United States of America
    PLoS ONE 9:e89633. 2014
    ..Precise documentation of temporal changes in the annual abundance and dispersal of Culicoides midges is essential for the creation of models to predict BTV infection of livestock and to develop sound abatement strategies. ..
  54. doi request reprint Use of antibody titers measured via serum synergistic hemolysis inhibition testing to predict internal Corynebacterium pseudotuberculosis infection in horses
    Jennifer M Jeske
    Department of Medicine, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
    J Am Vet Med Assoc 242:86-92. 2013
    ..To estimate likelihood ratios (LRs) of correctly identifying internal Corynebacterium pseudotuberculosis infection in horses by measurement of antibody titers via serum synergistic hemolysis inhibition (SHI) testing...
  55. ncbi request reprint Detection of antibodies to West Nile virus in equine sera using microsphere immunoassay
    Udeni B R Balasuriya
    Equine Viral Disease Laboratory, Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    J Vet Diagn Invest 18:392-5. 2006
    ..0001) or naturally infected with WNV (P < 0.0001). The rE MIA would appear to provide a rapid, convenient, inexpensive, and accurate test for the screening of equine sera for the presence of antibodies to WNV...
  56. ncbi request reprint Factor analysis of a Johne's disease risk assessment questionnaire with evaluation of factor scores and a subset of original questions as predictors of observed clinical paratuberculosis
    Roy D Berghaus
    Department of Population Health and Reproduction, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
    Prev Vet Med 72:291-309. 2005
    ..In conclusion, the length of the current risk assessment instrument could be reduced considerably without a substantial loss of information by removing or combining questions that are strongly correlated...
  57. ncbi request reprint New genotypes and factors associated with Cryptosporidium detection in mussels (Mytilus spp.) along the California coast
    W A Miller
    School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Int J Parasitol 35:1103-13. 2005
    ....
  58. doi request reprint Association between caudal fold tuberculin test responses and results of an ELISA for Mycobacterium avium subsp paratuberculosis and mycobacterial culture of feces in tuberculosis-free dairy herds
    Barbara P Brito
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California Davis, Davis, CA 95616
    J Am Vet Med Assoc 244:582-7. 2014
    ..Within-herd MAP prevalence may affect specificity of CFT testing for tuberculosis in cattle. ..
  59. ncbi request reprint Evaluation and comparison of an indirect fluorescent antibody test for detection of antibodies to Sarcocystis neurona, using serum and cerebrospinal fluid of naturally and experimentally infected, and vaccinated horses
    Paulo C Duarte
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, California 95616, USA
    J Parasitol 90:379-86. 2004
    ..The S. neurona vaccine could possibly interfere with equine protozoal myeloencephalitis diagnosis...
  60. ncbi request reprint Recombinant canarypox virus vaccine co-expressing genes encoding the VP2 and VP5 outer capsid proteins of bluetongue virus induces high level protection in sheep
    Josh D Boone
    Equine Viral Disease Laboratory, Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Vaccine 25:672-8. 2007
    ..These data confirm that the BTV-CP vaccine may be useful for the protective immunization of ruminants against bluetongue, and it may avoid the problems inherent to live-attenuated (LA) BTV vaccines...
  61. doi request reprint Comparison of the use of scapular ultrasonography, physical examination, and measurement of serum biomarkers of bone turnover versus scintigraphy for detection of bone fragility syndrome in horses
    Amanda M Arens
    JD Wheat Veterinary Orthopedic Research Laboratory, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA
    J Am Vet Med Assoc 242:76-85. 2013
    ....
  62. pmc Bluetongue virus infection alters the impedance of monolayers of bovine endothelial cells as a result of cell death
    Clifton P Drew
    Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, One Shields Ave, University of California, Davis, CA 95616, USA
    Vet Immunol Immunopathol 136:108-15. 2010
    ..However, the contribution of cytokine-induced interendothelial gap formation with subsequent edema and hypovolemic shock contributes to the pathogenesis of bluetongue remains to be fully characterized...
  63. ncbi request reprint Modelling risk when binary outcomes are subject to error
    Pat McInturff
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, One Shields Ave, Davis, CA 95616, USA
    Stat Med 23:1095-109. 2004
    ..Regression coefficient estimates are shown to change noticeably when expert prior knowledge and imperfect sensitivity and specificity are incorporated into the model...
  64. ncbi request reprint Consensus recommendations on diagnostic testing for the detection of paratuberculosis in cattle in the United States
    Michael T Collins
    Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin Madison, Madison, WI 53706 1102, USA
    J Am Vet Med Assoc 229:1912-9. 2006
    ..Furthermore, as new information becomes available and assays are improved and their accuracy is critically evaluated, changes to these recommendations may be necessary...
  65. ncbi request reprint Evaluation of two direct immunoassays for rapid detection of petroleum products on marine birds
    Deana L Fritcher
    School of Veterinary Medicine, Wildlife Health Center, University of California, Davis 95616, USA
    Mar Pollut Bull 44:388-95. 2002
    ....
  66. ncbi request reprint Application of the luciferase recombinant cell culture bioassay system for the analysis of polycyclic aromatic hydrocarbons
    Michael H Ziccardi
    Wildlife Health Center, School of Veterinary Medicine, University of California, Davis 95616, USA
    Environ Toxicol Chem 21:2027-33. 2002
    ..Overall, our results strongly support the use of this system for the detection and relative quantitation of Ah receptor-active PAHs...
  67. ncbi request reprint Application of the luciferase cell culture bioassay for the detection of refined petroleum products
    Michael H Ziccardi
    Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Mar Pollut Bull 44:983-91. 2002
    ..Additionally, weathering of products reduced their induction potency. Based on the high I-EQ estimates of many products, biological effects associated with exposure may have been previously underestimated using other diagnostic methods...
  68. ncbi request reprint Sensitivity and specificity of western blot testing of cerebrospinal fluid and serum for diagnosis of equine protozoal myeloencephalitis in horses with and without neurologic abnormalities
    Barbara M Daft
    California Animal Health and Food Safety Laboratory System, School of Veterinary Medicine, University of California, Davis, San Bernardino 92408, USA
    J Am Vet Med Assoc 221:1007-13. 2002
    ..To determine sensitivity and specificity of western blot testing (WBT) of CSF and serum for diagnosis of equine protozoal myeloencephalitis (EPM) in horses with and without neurologic abnormalities...
  69. ncbi request reprint Qualitative evaluation of selective tests for detection of Neospora hughesi antibodies in serum and cerebrospinal fluid of experimentally infected horses
    Andrea E Packham
    Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, California 95616, USA
    J Parasitol 88:1239-46. 2002
    ..Sera from 3 naturally infected horses had titers >1:640. Cerebrospinal fluid in all but I infected horse had very low N. hughesi IFAT titers (<1:160), starting at postinoculation day 30...
  70. ncbi request reprint Validation of a cell culture bioassay for detection of petroleum exposure in mink (Mustela vison) as a model for detection in sea otters (Enhydra lutris)
    Michael H Ziccardi
    Wildlife Health Center, Department of Pathology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Am J Vet Res 63:963-8. 2002
    ..To validate a luciferase bioassay, which is based on a recombinant mouse hepatoma cell line, for the detection of exposure to petroleum in mustelid species...
  71. doi request reprint Experimental reproduction of severe bluetongue in sheep
    N J MacLachlan
    Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Vet Pathol 45:310-5. 2008
    ....
  72. ncbi request reprint Mortality and recovery of runt white sturgeon (Acipenser transmontanus) in a commercial farm in California, USA
    M P Georgiadis
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Prev Vet Med 43:269-81. 2000
    ..Financial analysis showed that this practice was profitable, if the value of white sturgeon fish for the farm exceeded $2.05 per kg...
  73. pmc Colostral transmission of bluetongue virus nucleic acid among newborn dairy calves in California
    C E Mayo
    Department of Pathology, Microbiology and Immunology, University of California, Davis, CA, USA
    Transbound Emerg Dis 57:277-81. 2010
    ..The data confirm both localized, vector-mediated, seasonal transmission of BTV as well as dissemination of BTV and/or viral nucleic acid to newborn calves following ingestion of colostrum...
  74. ncbi request reprint Effects of petroleum on mink applied as a model for reproductive success in sea otters
    J A Mazet
    Wildlife Health Center, School of Veterinary Medicine, University of California, Davis, California 95616, USA
    J Wildl Dis 37:686-92. 2001
    ..Therefore, it is possible that sea otter populations consuming contaminated food sources or colonizing previously oiled habitats will have reduced reproductive success...
  75. doi request reprint Reliability of environmental sampling to quantify Mycobacterium avium subspecies paratuberculosis on California free-stall dairies
    S S Aly
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    J Dairy Sci 92:3634-42. 2009
    ..Environmental sampling of free-stall pens using the standardized sampling protocol yielded comparable PCR and culture results across collectors with different experience levels and at different times within a 5-d period...
  76. ncbi request reprint Growth of white sturgeon (Acipenser transmontanus) following recovery from the stunted stage in a commercial farm in California, USA
    M P Georgiadis
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Prev Vet Med 43:283-91. 2000
    ..We concluded that once white sturgeon runts recovered and started growing, they grew at least as well as fish that had never been runts...
  77. doi request reprint Endogenous transplacental transmission of Neospora hughesi in naturally infected horses
    N Pusterla
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, One Shields Avenue, Davis, California 95616, USA
    J Parasitol 97:281-5. 2011
    ..hughesi. Only 1 placenta collected in 2007 from the mare with the 2 congenitally infected foals tested PCR positive for N. hughesi. In conclusion, N. hughesi persisted in this population via endogenous transplacental infection...
  78. doi request reprint Association between Mycobacterium avium subspecies paratuberculosis infection and milk production in two California dairies
    S S Aly
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    J Dairy Sci 93:1030-40. 2010
    ....
  79. pmc Prevalence of and associated risk factors for shedding Cryptosporidium parvum oocysts and Giardia cysts within feral pig populations in California
    E R Atwill
    Veterinary Medicine Teaching and Research Center, School of Veterinary Medicine, University of California, Davis 93274, USA
    Appl Environ Microbiol 63:3946-9. 1997
    ..cysts among feral pigs. These results suggest that given the propensity for feral pigs to focus their activity in riparian areas, feral pigs may serve as a source of protozoal contamination for surface water...
  80. ncbi request reprint Comparison of methods for estimation of individual-level prevalence based on pooled samples
    D W Cowling
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Prev Vet Med 39:211-25. 1999
    ..We compare estimates from each approach using culture results from pools of 20 eggs from three flocks on a California ranch that were producing eggs that were contaminated with Salmonella enteritidis phage type 4...
  81. ncbi request reprint Effects of oral tetrachlorvinphos fly control (Equitrol) administration in horses: physiological and behavioural findings
    J Berger
    Behaviour Service, Veterinary Medical Teaching Hospital, University of California, Davis, California 95616, USA
    Vet Res Commun 32:75-92. 2008
    ..No changes were detected in physiological or neurological parameters, immune markers or thyroid hormones in treated (n=6) or control (n=4) horses during the course of the study...
  82. ncbi request reprint Environmental sampling for detection of Mycobacterium avium ssp. paratuberculosis on large California dairies
    R D Berghaus
    Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, 95616, USA
    J Dairy Sci 89:963-70. 2006
    ..Environmental sampling was an effective and inexpensive method of identifying herds infected with Mycobacterium avium ssp. paratuberculosis...
  83. ncbi request reprint Salmonella spp., Vibrio spp., Clostridium perfringens, and Plesiomonas shigelloides in marine and freshwater invertebrates from coastal California ecosystems
    W A Miller
    School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Microb Ecol 52:198-206. 2006
    ....
  84. ncbi request reprint Prevalence of reduced fibrinogen binding to platelets in a population of Thoroughbreds
    Jeffrey W Norris
    Department of Anatomy, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 68:716-21. 2007
    ..To measure the frequency and magnitude of reduced fibrinogen binding in a population of horses from a Thoroughbred breeding farm...
  85. doi request reprint Evaluation of the fluorescence polarization assay for the detection of Brucella abortus antibodies in bison in a natural setting
    Brant A Schumaker
    Center for Animal Disease Modeling and Surveillance, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Comp Immunol Microbiol Infect Dis 33:e119-25. 2010
    ..There is a need for long-term longitudinal studies to estimate diagnostic accuracy of tests for B. abortus in bison...
  86. ncbi request reprint The role of epidemiology in the prevention, diagnosis, and control of infectious diseases of fish
    M P Georgiadis
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Prev Vet Med 48:287-302. 2001
    ....
  87. ncbi request reprint Evaluation of an indirect fluorescent antibody test (IFAT) for demonstration of antibodies to Toxoplasma gondii in the sea otter (Enhydra lutris)
    M A Miller
    Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis 95616, USA
    J Parasitol 88:594-9. 2002
    ..lutris nereis) and 38% (8 out of 21) of Washington sea otters (E. lutris kenyoni) were seropositive for T. gondii, compared with 0% (0 out of 65) of Alaskan sea otters (E. lutris kenyoni)...
  88. ncbi request reprint Dietary risk factors and colonic pH and mineral concentrations in horses with enterolithiasis
    Diana M Hassel
    Comparative Gastroenterology Laboratory, Department of Surgical and Radiological Scieinces, School of Veterinary Medicine, University of California, Davis, CA, USA
    J Vet Intern Med 18:346-9. 2004
    ..Dietary modifications promoting acidification of colonic contents and dilution of minerals might be beneficial as preventive measures for enterolithiasis in horses...
  89. ncbi request reprint Evaluation of forelimb horseshoe characteristics of thoroughbreds racing on dirt surfaces
    Diane K Gross
    J D Wheat Veterinary Orthopedic Research Laboratory, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 65:1021-30. 2004
    ..To describe forelimb horseshoe characteristics of horses racing on dirt surfaces and determine whether these characteristics vary with region of California, season, horse characteristics, and race-related factors...
  90. ncbi request reprint Sample size calculations for surveys to substantiate freedom of populations from infectious agents
    Wesley O Johnson
    Department of Statistics, University of California, Davis, California 95616, USA
    Biometrics 60:165-71. 2004
    ..using an example of foot-and-mouth disease. User-friendly programs for sample size calculation and analysis of survey data are available at http://www.epi.ucdavis.edu/diagnostictests/...
  91. ncbi request reprint Evaluation of a stochastic Markov-chain model for the development of forelimb injuries in Thoroughbred racehorses
    Ashley E Hill
    J D Wheat Veterinary Orthopedic Research Laboratory, Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Am J Vet Res 64:328-37. 2003
    ....
  92. ncbi request reprint Financial evaluation of vaccination and testing alternatives for control of parvovirus-induced reproductive failure in swine
    I A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    J Am Vet Med Assoc 208:863-9. 1996
    ..To identify the preferable testing and vaccination strategy for control of porcine parvovirus (PPV) during a 6-month period...
  93. ncbi request reprint Financial analysis of alternative treatments for clinical mastitis associated with environmental pathogens
    A L Van Eenennaam
    University of California, Davis 95616, USA
    J Dairy Sci 78:2086-95. 1995
    ..There was no treatment effect on total milk production, fat production, or time to removal of the enrolled cows from the herd...
  94. ncbi request reprint Effect of diagnostic testing error on intracluster correlation coefficient estimation
    A J Branscum
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    Prev Vet Med 69:63-75. 2005
    ..S. sheep flocks...
  95. ncbi request reprint The utility of Bayes' theorem and Bayesian inference in veterinary clinical practice and research
    I A Gardner
    Department of Medicine and Epidemiology, School of Veterinary Medicine, One Shields Ave, University of California, Davis CA 95616, USA
    Aust Vet J 80:758-61. 2002
  96. ncbi request reprint Comparison of the use of regulatory assays and high-performance liquid chromatography for detection of residues of ceftiofur sodium metabolites in tissue specimens of culled dairy cattle
    Michael A Payne
    Environmental Toxicology Extension, University of California, Davis, CA 95616, USA
    Am J Vet Res 65:1730-3. 2004
    ..To compare the results of regulatory screening and confirmation assays with those of high-performance liquid chromatography (HPLC) in the detection of ceftiofur metabolites in the tissues of culled dairy cattle...
  97. ncbi request reprint Regional risk of exporting cattle seropositive for bluetongue virus from the United States
    Bruce R Hoar
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616 USA
    Am J Vet Res 64:520-9. 2003
    ....
  98. ncbi request reprint Risk factors associated with Corynebacterium pseudotuberculosis infection in California horses
    M G Doherr
    Department Medicine and Epidemiology, University of California, Davis, USA
    Prev Vet Med 35:229-39. 1998
    ....
  99. ncbi request reprint Application and evaluation of a mailed questionnaire for an epidemiologic study of Corynebacterium pseudotuberculosis infection in horses
    M G Doherr
    Department of Medicine and Epidemiology, University of California at Davis, USA
    Prev Vet Med 35:241-53. 1998
    ..The mailed survey provided a rapid and cost-effective method of collecting additional information to supplement existing medical records...
  100. ncbi request reprint Risk factors for and outcomes of noncatastrophic suspensory apparatus injury in Thoroughbred racehorses
    A E Hill
    Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis 95616, USA
    J Am Vet Med Assoc 218:1136-44. 2001
    ..Modifying training intensity and toe grab height for horses with SMSAI may decrease the incidence of severe MSI...
  101. ncbi request reprint Equine adenovirus 1 infection of hospitalised and healthy foals and horses
    S A Bell
    Equine Viral Disease Laboratory, Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis 95616, USA
    Equine Vet J 38:379-81. 2006