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Genomes and GenesSpecies | Ian A GardnerSummaryAffiliation: University of California Country: USA Publications
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Publications
Bayesian modeling of animal- and herd-level prevalencesA 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...
Risk factors for Toxoplasma gondii infection in wild rodents from central coastal California and a review of T. gondii prevalence in rodentsHaydee 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...- Consensus-based reporting standards for diagnostic test accuracy studies for paratuberculosis in ruminantsIan 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.... - Empirical and theoretical evidence for herd size as a risk factor for swine diseasesIan 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.... - Statistical evaluation of test accuracy studies for Toxoplasma gondii in food animal intermediate hostsI 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... - Quality standards are needed for reporting of test accuracy studies for animal diseasesIan 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... - An epidemiologic critique of current microbial risk assessment practices: the importance of prevalence and test accuracy dataIan 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... - Conditional dependence between tests affects the diagnosis and surveillance of animal diseasesI A Gardner
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
Prev Vet Med 45:107-22. 2000.... - Receiver-operating characteristic curves and likelihood ratios: improvements over traditional methods for the evaluation and application of veterinary clinical pathology testsIan 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... - Risk of transplacental transmission of Sarcocystis neurona and Neospora hughesi in California horsesPaulo 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... - Evaluation of two Toxoplasma gondii serologic tests used in a serosurvey of domestic cats in CaliforniaHaydee 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... - Detection of Toxoplasma gondii-like oocysts in cat feces and estimates of the environmental oocyst burdenHaydee 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... - 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 statusRoy 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... - Chemical inactivation of Toxoplasma gondii oocysts in waterKatlyn 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... - Incidence and effects of West Nile virus infection in vaccinated and unvaccinated horses in CaliforniaIan A Gardner
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Vet Res 38:109-16. 2007.... - The combination of abundance and infection rates of Culicoides sonorensis estimates risk of subsequent bluetongue virus infection of sentinel cattle on California dairy farmsChristie 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.... - Simulation model for evaluation of testing strategies for detection of paratuberculosis in midwestern US dairy herdsSaraya 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... - 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... - Risk of postnatal exposure to Sarcocystis neurona and Neospora hughesi in horsesPaulo 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..5 years of age. Maternally acquired antibodies may cause false-positive results for 3 or 4 months after birth, and EPM was a rare clinical disease in horses < or = 2.5 years of age... - Effects of blood contamination of cerebrospinal fluid on results of indirect fluorescent antibody tests for detection of antibodies against Sarcocystis neurona and Neospora hughesiCarrie 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... - 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 bacteSharif 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... - Herd characteristics and management practices associated with seroprevalence of Mycobacterium avium subsp paratuberculosis infection in dairy herdsSaraya 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... - Isolation of Mycobacterium avium subsp. paratuberculosis from waste milk delivered to California calf ranchesJuliana 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... - Experimental infection of Peromyscus californicus with Toxoplasma gondiiHaydee 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... - Bayesian estimation of the receiver operating characteristic curve for a diagnostic test with a limit of detection in the absence of a gold standardSeyed 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... - Immune responses during pregnancy in heifers naturally infected with Neospora caninum with and without immunizationAurélie 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)... - Evaluation of microbial culture of pooled fecal samples for detection of Mycobacterium avium subsp paratuberculosis in large dairy herdsSaraya 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..CONCLUSIONS AND CLINICAL RELEVANCE: Use of pooled fecal samples from 10 cows was a cost-effective tool for herd screening and may provide a good estimate of the percentage of MAP-infected cows in dairy herds with a low prevalence of MAP... - Variation in Bluetongue virus real-time reverse transcription polymerase chain reaction assay results in blood samples of sheep, cattle, and alpacaBarbara 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... - 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 samplesSharif 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.... - Frequentist and Bayesian approaches to prevalence estimation using examples from Johne's diseaseLocksley 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... - Risk factors for proximal sesamoid bone fractures associated with exercise history and horseshoe characteristics in Thoroughbred racehorsesLucy 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... - On the interpretation of test sensitivity in the two-test two-population problem: assumptions matterWesley 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... - Evaluation of cost-effectiveness of targeted sampling methods for detection of Mycobacterium avium subsp paratuberculosis infection in dairy herdsSaraya 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..CONCLUSIONS AND CLINICAL RELEVANCE: Detection of herds with paratuberculosis could be improved, and costs of testing substantially reduced by sampling targeted groups of cows... - Probability of introduction of exotic strains of bluetongue virus into the US and into California through importation of infected cattleBruce 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.... - Anthropogenic and meteorological factors influence vector abundance and prevalence of bluetongue virus infection of dairy cattle in CaliforniaChristie 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.... - Fecal shedding of Mycobacterium avium subsp. paratuberculosis by dairy cowsBeate 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)... 
Physical inactivation of Toxoplasma gondii oocysts in waterKatlyn 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...- The immune response of foals to natural infection with equid herpesvirus-2 and its association with febrile illnessStephanie 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... - Diagnostic test accuracy and prevalence inferences based on joint and sequential testing with finite population samplingChun-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... - Comparison of macrostructural and microstructural bone features in Thoroughbred racehorses with and without midbody fracture of the proximal sesamoid boneLucy 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... - Temporal detection of equine herpesvirus infections of a cohort of mares and their foalsStephanie 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... - Outdoor fecal deposition by free-roaming cats and attitudes of cat owners and nonowners toward stray pets, wildlife, and water pollutionHaydee A Dabritz
Wildlife Health Center, University of California, Davis, CA 95616, USA
J Am Vet Med Assoc 229:74-81. 2006..However, feral cats are not the principal source of fecal loading because owned cats defecating outdoors contribute an estimated 77.6 tonnes (76.4 tons) or 72% of the annual outdoor fecal deposition... - Association between findings on palmarodorsal radiographic images and detection of a fracture in the proximal sesamoid bones of forelimbs obtained from cadavers of racing ThoroughbredsLucy 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..Osteophytes and vascular channels were common findings; however, fractures were less likely to occur in bones with these features... - 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 herdsTim 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... - 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 racehorsesAshley 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..Horses in longterm continuous training with recent high-intensity exercise are at greater risk for injury. Use of pads in horseshoes was associated with SAF, although the relationship may not be causal... - Estimation of diagnostic-test sensitivity and specificity through Bayesian modelingA 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... - 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... - Observer variation in visual assessment of forelimb horseshoe characteristics on Thoroughbred racehorsesDiane 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..CONCLUSIONS AND CLINICAL RELEVANCE: Visual observation of horseshoes can be a feasible and reproducible method for assessing horseshoe characteristics prospectively in a large cohort of horses under racing conditions... - Modified culture protocol for isolation of Mycobacterium avium subsp. paratuberculosis from raw milkJuliana 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... - Comparison of a serum indirect fluorescent antibody test with two Western blot tests for the diagnosis of equine protozoal myeloencephalitisPaulo 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... - Detection of antibodies to West Nile virus in equine sera using microsphere immunoassayUdeni 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... - 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 paratuberculosisRoy 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... - New genotypes and factors associated with Cryptosporidium detection in mussels (Mytilus spp.) along the California coastW A Miller
School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Int J Parasitol 35:1103-13. 2005.... - Modelling risk when binary outcomes are subject to errorPat 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... - Bluetongue virus infection alters the impedance of monolayers of bovine endothelial cells as a result of cell deathClifton 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... - Consensus recommendations on diagnostic testing for the detection of paratuberculosis in cattle in the United StatesMichael 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... - Clams (Corbicula fluminea) as bioindicators of fecal contamination with Cryptosporidium and Giardia spp. in freshwater ecosystems in CaliforniaWoutrina 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... - Application of the luciferase recombinant cell culture bioassay system for the analysis of polycyclic aromatic hydrocarbonsMichael 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... - Application of the luciferase cell culture bioassay for the detection of refined petroleum productsMichael 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... - Evaluation of two direct immunoassays for rapid detection of petroleum products on marine birdsDeana L Fritcher
School of Veterinary Medicine, Wildlife Health Center, University of California, Davis 95616, USA
Mar Pollut Bull 44:388-95. 2002.... - Qualitative evaluation of selective tests for detection of Neospora hughesi antibodies in serum and cerebrospinal fluid of experimentally infected horsesAndrea 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... - 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..The lack of luciferase activity in serum samples collected from mink greater than 1 week after experimental exposure was likely attributable to lower overall petroleum exposure in our trial, compared with natural exposures... - Sensitivity and specificity of western blot testing of cerebrospinal fluid and serum for diagnosis of equine protozoal myeloencephalitis in horses with and without neurologic abnormalitiesBarbara 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..Slight CNS inflammation was common in horses with and without S neurona-specific antibodies in the CSF and should not be considered an indication of CNS infection with S neurona... - Effects of petroleum on mink applied as a model for reproductive success in sea ottersJ 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... - Growth of white sturgeon (Acipenser transmontanus) following recovery from the stunted stage in a commercial farm in California, USAM 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... - Mortality and recovery of runt white sturgeon (Acipenser transmontanus) in a commercial farm in California, USAM 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... - Comparison of methods for estimation of individual-level prevalence based on pooled samplesD 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... - Prevalence of and associated risk factors for shedding Cryptosporidium parvum oocysts and Giardia cysts within feral pig populations in CaliforniaE 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... - Effects of oral tetrachlorvinphos fly control (Equitrol) administration in horses: physiological and behavioural findingsJ 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... - Salmonella spp., Vibrio spp., Clostridium perfringens, and Plesiomonas shigelloides in marine and freshwater invertebrates from coastal California ecosystemsW A Miller
School of Veterinary Medicine, University of California, Davis, CA 95616, USA
Microb Ecol 52:198-206. 2006.... - Reliability of environmental sampling to quantify Mycobacterium avium subspecies paratuberculosis on California free-stall dairiesS 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... - Environmental sampling for detection of Mycobacterium avium ssp. paratuberculosis on large California dairiesR 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... - Association between Mycobacterium avium subspecies paratuberculosis infection and milk production in two California dairiesS S Aly
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
J Dairy Sci 93:1030-40. 2010.... - Colostral transmission of bluetongue virus nucleic acid among newborn dairy calves in CaliforniaC 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... - Endogenous transplacental transmission of Neospora hughesi in naturally infected horsesN 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... - Experimental reproduction of severe bluetongue in sheepN 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.... - Use of antibody titers measured via serum synergistic hemolysis inhibition testing to predict internal Corynebacterium pseudotuberculosis infection in horsesJennifer 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... - Evaluation of the fluorescence polarization assay for the detection of Brucella abortus antibodies in bison in a natural settingBrant 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... - Recombinant canarypox virus vaccine co-expressing genes encoding the VP2 and VP5 outer capsid proteins of bluetongue virus induces high level protection in sheepJosh 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... - Prevalence of reduced fibrinogen binding to platelets in a population of ThoroughbredsJeffrey 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... - 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)... - The role of epidemiology in the prevention, diagnosis, and control of infectious diseases of fishM 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.... - Prevalence of abnormal radiographic findings in 2-year-old Thoroughbreds at in-training sales and associations with racing performanceDennis 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.... - Sample size calculations for surveys to substantiate freedom of populations from infectious agentsWesley 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/... - Dietary risk factors and colonic pH and mineral concentrations in horses with enterolithiasisDiana 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... - Evaluation of forelimb horseshoe characteristics of thoroughbreds racing on dirt surfacesDiane 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.... - Evaluation of a stochastic Markov-chain model for the development of forelimb injuries in Thoroughbred racehorsesAshley 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..CONCLUSIONS AND CLINICAL RELEVANCE: Reducing the number of sprints at distances > 6 furlongs, particularly among horses with PSAI, reduces risk of CDY and SSAI... - The utility of Bayes' theorem and Bayesian inference in veterinary clinical practice and researchI 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 - Effect of diagnostic testing error on intracluster correlation coefficient estimationA 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... - Financial analysis of alternative treatments for clinical mastitis associated with environmental pathogensA 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... - Financial evaluation of vaccination and testing alternatives for control of parvovirus-induced reproductive failure in swineI 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... - Regional risk of exporting cattle seropositive for bluetongue virus from the United StatesBruce 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..CONCLUSIONS AND CLINICAL RELEVANCE: Results from this study will aid importers in making scientifically based decisions regarding risk of importing antibody-positive cattle... - 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 cattleMichael A Payne
Environmental Toxicology Extension, University of California, Davis, CA 95616, USA
Am J Vet Res 65:1730-3. 2004.... - 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 horsesPaulo 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... - Efficacy of intramammary antibiotic therapy for treatment of clinical mastitis caused by environmental pathogensW M Guterbock
School of Veterinary Medicine, University of California, Davis 95616
J Dairy Sci 76:3437-44. 1993..9, 55.0 or 49.1%) cure rate among groups. Clinical cure rates did not differ when quarters were grouped by etiology, but clinical cure rates for quarters with pathogens other than streptococci or coliforms were lower in group O... - Application and evaluation of a mailed questionnaire for an epidemiologic study of Corynebacterium pseudotuberculosis infection in horsesM 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... - Equine adenovirus 1 infection of hospitalised and healthy foals and horsesS 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 - Risk factors associated with Corynebacterium pseudotuberculosis infection in California horsesM G Doherr
Department Medicine and Epidemiology, University of California, Davis, USA
Prev Vet Med 35:229-39. 1998.... - Risk factors for and outcomes of noncatastrophic suspensory apparatus injury in Thoroughbred racehorsesA 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... - Evaluation of five diagnostic methods for the detection and quantification of Myxobolus cerebralisGarry O Kelley
Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
J Vet Diagn Invest 16:202-11. 2004.... - "TAGS", a program for the evaluation of test accuracy in the absence of a gold standardRegis Pouillot
Epidemiological Support to Risk Analysis Unit, French Agency for Food Safety, Maisons Alfort, France
Prev Vet Med 53:67-81. 2002..Two examples are used to illustrate application and limitations of the programs. The programs are available at www.afssa.fr/interne/tags.htm (Europe) or www.epi.ucdavis.edu/diagnostictests/ (USA)...