Tadeusz K Graczyk

Summary

Affiliation: Johns Hopkins Bloomberg School of Public Health
Country: USA

Publications

  1. pmc Propagation of human enteropathogens in constructed horizontal wetlands used for tertiary wastewater treatment
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Appl Environ Microbiol 75:4531-8. 2009
  2. ncbi Human-virulent microsporidian spores in solid waste landfill leachate and sewage sludge, and effects of sanitization treatments on their inactivation
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Parasitol Res 101:569-75. 2007
  3. pmc Human enteropathogen load in activated sewage sludge and corresponding sewage sludge end products
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Appl Environ Microbiol 73:2013-5. 2007
  4. ncbi Quantitative assessment of viable Cryptosporidium parvum load in commercial oysters (Crassostrea virginica) in the Chesapeake Bay
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Parasitol Res 100:247-53. 2007
  5. ncbi Mechanical transmission of Cryptosporidium parvum oocysts by flies
    Thaddeus K Graczyk
    Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Wiad Parazytol 50:243-7. 2004
  6. ncbi Parasitic zoonoses; public health and veterinary perspectives
    Tadeusz K Graczyk
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA
    Wiad Parazytol 51:3-8. 2005
  7. pmc Retrospective species identification of microsporidian spores in diarrheic fecal samples from human immunodeficiency virus/AIDS patients by multiplexed fluorescence in situ hybridization
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA
    J Clin Microbiol 45:1255-60. 2007
  8. pmc Recovery, bioaccumulation, and inactivation of human waterborne pathogens by the Chesapeake Bay nonnative oyster, Crassostrea ariakensis
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Appl Environ Microbiol 72:3390-5. 2006
  9. ncbi The association of Blastocystis hominis and Endolimax nana with diarrheal stools in Zambian school-age children
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Parasitol Res 98:38-43. 2005
  10. pmc Mechanical transmission of human protozoan parasites by insects
    Thaddeus K Graczyk
    Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Clin Microbiol Rev 18:128-32. 2005

Collaborators

Detail Information

Publications68

  1. pmc Propagation of human enteropathogens in constructed horizontal wetlands used for tertiary wastewater treatment
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Appl Environ Microbiol 75:4531-8. 2009
    ..To our knowledge, this is the first report of C. meleagridis from Ireland...
  2. ncbi Human-virulent microsporidian spores in solid waste landfill leachate and sewage sludge, and effects of sanitization treatments on their inactivation
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Parasitol Res 101:569-75. 2007
    ..Multiplexed FISH assay is a reliable quantitative molecular fluorescence microscopy method for the simultaneous identification of E. bieneusi, E. intestinalis, E. hellem, and E. cuniculi spores in environmental samples...
  3. pmc Human enteropathogen load in activated sewage sludge and corresponding sewage sludge end products
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Appl Environ Microbiol 73:2013-5. 2007
    ....
  4. ncbi Quantitative assessment of viable Cryptosporidium parvum load in commercial oysters (Crassostrea virginica) in the Chesapeake Bay
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Parasitol Res 100:247-53. 2007
    ..FISH assay for identification can be retrospectively applied to properly stored samples...
  5. ncbi Mechanical transmission of Cryptosporidium parvum oocysts by flies
    Thaddeus K Graczyk
    Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Wiad Parazytol 50:243-7. 2004
    ..parvum is high...
  6. ncbi Parasitic zoonoses; public health and veterinary perspectives
    Tadeusz K Graczyk
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA
    Wiad Parazytol 51:3-8. 2005
    ..The convergence of both public health and veterinary services currently represents a real challenge for managing zoonotic diseases...
  7. pmc Retrospective species identification of microsporidian spores in diarrheic fecal samples from human immunodeficiency virus/AIDS patients by multiplexed fluorescence in situ hybridization
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA
    J Clin Microbiol 45:1255-60. 2007
    ..The method can be used for epidemiological investigations and applied in clinical settings...
  8. pmc Recovery, bioaccumulation, and inactivation of human waterborne pathogens by the Chesapeake Bay nonnative oyster, Crassostrea ariakensis
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Appl Environ Microbiol 72:3390-5. 2006
    ..Aquacultures of nonnative oysters in the Chesapeake Bay will provide excellent ecological services in regard to efficient cleaning of human-infectious agents from the estuarine waters...
  9. ncbi The association of Blastocystis hominis and Endolimax nana with diarrheal stools in Zambian school-age children
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Parasitol Res 98:38-43. 2005
    ..This survey supports the recent evidence that B. hominis and E. nana infections are associated with deficient sanitation and low hygiene standards and can contribute to diarrhea in children in developing countries...
  10. pmc Mechanical transmission of human protozoan parasites by insects
    Thaddeus K Graczyk
    Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Clin Microbiol Rev 18:128-32. 2005
    ..Mechanical transmission of human parasites by nonbiting flies and epidemiological involvement of other synanthropic insects in human food-borne diseases have not received adequate scientific attention...
  11. ncbi Quality of reclaimed waters: a public health need for source tracking of wastewater-derived protozoan enteropathogens in engineered wetlands
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Trans R Soc Trop Med Hyg 101:532-3. 2007
    ....
  12. pmc Risk of handling as a route of exposure to infectious waterborne Cryptosporidium parvum oocysts via Atlantic blue crabs (Callinectes sapidus)
    Thaddeus K Graczyk
    Johns Hopkins Bloomberg School of Public Health, Department of Environmental Health Sciences, 615 N Wolfe Street, Baltimore, MD 21205, USA
    Appl Environ Microbiol 73:4069-70. 2007
    ..The study demonstrated that blue crabs can transfer C. parvum oocysts to persons involved in handling or preparing crabs and that they may contaminate other surfaces or products during storage...
  13. doi Human zoonotic enteropathogens in a constructed free-surface flow wetland
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
    Parasitol Res 105:423-8. 2009
    ....
  14. ncbi Molecular markers and sentinel organisms for environmental monitoring
    T K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205, USA
    Parasite 15:458-62. 2008
    ..Current technology allows for multiplexed species-specific identification, genotyping, enumeration, viability assessment, and source-tracking of human enteropathogens which considerably enhances the pathogen source-tracking efforts...
  15. doi The role of birds in dissemination of human waterborne enteropathogens
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD3 21205, USA
    Trends Parasitol 24:55-9. 2008
    ..Where justifiable, the presence of waterfowl should be supported; however, management of drinking and recreational water resources needs to be improved by incorporating effective protection measures for pathogens linked to these birds...
  16. ncbi Bather density and levels of Cryptosporidium, Giardia, and pathogenic microsporidian spores in recreational bathing water
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA
    Parasitol Res 101:1729-31. 2007
    ....
  17. ncbi The effect of a taste-enhancement process for cold-stored raw shell-stock oysters (Crassostrea virginica) on the spillage of human enteropathogens
    Thaddeus K Graczyk
    Division of Environmental Health Engineering, Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA
    Parasitol Res 101:1483-6. 2007
    ....
  18. ncbi Occurrence of Cryptosporidium and Giardia in sewage sludge and solid waste landfill leachate and quantitative comparative analysis of sanitization treatments on pathogen inactivation
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Environ Res 106:27-33. 2008
    ....
  19. doi Relationships among bather density, levels of human waterborne pathogens, and fecal coliform counts in marine recreational beach water
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD, 21205, USA
    Parasitol Res 106:1103-8. 2010
    ....
  20. pmc Quantitative evaluation of the impact of bather density on levels of human-virulent microsporidian spores in recreational water
    Thaddeus K Graczyk
    Johns Hopkins Bloomberg School of Public Health, Department of Environmental Health Sciences, Baltimore, MD 21205, USA
    Appl Environ Microbiol 73:4095-9. 2007
    ..Both these mechanisms can be considered for implementation in predictive models for contamination with microsporidian spores...
  21. pmc Urban feral pigeons (Columba livia) as a source for air- and waterborne contamination with Enterocytozoon bieneusi spores
    Thaddeus K Graczyk
    Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    Appl Environ Microbiol 73:4357-8. 2007
    ..5 x 10(3) Enterocytozoon bieneusi spores and that 1.3 x 10(3) spores could be inhaled by a nearby person...
  22. ncbi Human waterborne parasites in zebra mussels ( Dreissena polymorpha) from the Shannon River drainage area, Ireland
    Thaddeus K Graczyk
    Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 93:385-91. 2004
    ..parvum, against which no therapy exists. Zebra mussels can recover and concentrate environmentally derived pathogens and can be used for the sanitary assessment of water quality...
  23. pmc Recovery of waterborne Cryptosporidium parvum oocysts by freshwater benthic clams (Corbicula fluminea)
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Appl Environ Microbiol 64:427-30. 1998
    ..parvum oocysts. To optimize the detection of C. parvum oocysts in C. fluminea tissue, it is recommended that gill and GI tract samples be screened with IFA (such as that in the commercially available MERIFLUOR test kit)...
  24. ncbi Intestinal Cryptosporidium sp. infection in the Egyptian tortoise, Testudo kleinmanni
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Int J Parasitol 28:1885-8. 1998
    ..The present study constitutes the first report of Cryptosporidium sp. infection in T. kleinmanni, and the first histological documentation of intestinal cryptosporidiosis in Chelonia...
  25. ncbi Hyperkeratotic mange caused by Sarcoptes scabiei (Acariformes: Sarcoptidae) in juvenile human-habituated mountain gorillas (Gorilla gorilla beringei)
    T K Graczyk
    Harry W Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 87:1024-8. 2001
    ....
  26. ncbi Cryptosporidium parvum genotype 2 infections in free-ranging mountain gorillas (Gorilla gorilla beringei) of the Bwindi Impenetrable National Park, Uganda
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 87:368-70. 2001
    ..As G2 is cross-transmissible between humans and animals, C. parvum infections can be propagated in the habitats of human-habituated, free-ranging gorillas through both zoonotic and anthroponotic transmission cycles...
  27. ncbi Evaluation of the recovery of waterborne Giardia cysts by freshwater clams and cyst detection in clam tissue
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 85:30-4. 1999
    ..The results indicate that C. fluminea clams can be used for biological monitoring of contamination with Giardia...
  28. ncbi Cryptosporidium oocysts in Bent mussels (Ischadium recurvum) in the Chesapeake Bay
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 85:518-21. 1999
    ..7 ml of mussel tissue homogenate. The results indicate that Bent mussels, which are common throughout the Chesapeake Bay region, may prove to be useful as biological indicators of water contamination with Cryptosporidium oocysts...
  29. ncbi Foodborne infections vectored by molluscan shellfish
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD 21205, USA
    Curr Gastroenterol Rep 2:305-9. 2000
    ....
  30. ncbi The role of non-biting flies in the epidemiology of human infectious diseases
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Microbes Infect 3:231-5. 2001
    ..House flies are involved in mechanical transmission of nosocomial infections with multiple antibiotic-resistant bacteria in hospital environments...
  31. ncbi Cryptosporidium parvum oocysts in zebra mussels (Dreissena polymorpha): evidence from the St Lawrence River
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 87:231-4. 2001
    ..2 x 10(2), and approximately 4.4 x 10(2) oocysts were recovered from a single mussel. Zebra mussels can serve as biological indicators of waterborne contamination with Cryptosporidium...
  32. ncbi Fasciolopsiasis: is it a controllable food-borne disease?
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 87:80-3. 2001
    ....
  33. ncbi Hyperimmune bovine colostrum treatment of moribund Leopard geckos (Eublepharis macularius) infected with Cryptosporidium sp
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Vet Res 30:377-82. 1999
    ..oocyst isolates originating from Leopard geckos (E. macularius) demonstrated differences between gecko-derived oocyst isolates and isolates of C. serpentis recovered from snakes...
  34. ncbi A single genotype of Encephalitozoon intestinalis infects free-ranging gorillas and people sharing their habitats in Uganda
    Thaddeus K Graczyk
    The W Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 88:926-31. 2002
    ..intestinalis. It is highly unlikely that these two identical Enc. intestinalis genotypes were acquired independently by gorillas and people; it is much more probable that one group initiated infection of the other...
  35. ncbi Anthropozoonotic Giardia duodenalis genotype (assemblage) a infections in habitats of free-ranging human-habituated gorillas, Uganda
    Thaddeus K Graczyk
    The W Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    J Parasitol 88:905-9. 2002
    ..This genotype may have been introduced into gorilla populations through habituation activities and may have then been sustained in their habitats by anthropozoonotic transmission...
  36. ncbi Experimental transmission of Cryptosporidium oocyst isolates from mammals, birds and reptiles to captive snakes
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Vet Res 29:187-95. 1998
    ..Housing of snakes with other reptiles can enhance transmission of Cryptosporidium to snakes, and therefore should be avoided...
  37. pmc Giardia sp. cysts and infectious Cryptosporidium parvum oocysts in the feces of migratory Canada geese (Branta canadensis)
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Appl Environ Microbiol 64:2736-8. 1998
    ..The oocysts from three sites were infectious for mice and molecularly identified as the zoonotic genotype of Cryptosporidium parvum. Waterfowl can disseminate infectious C. parvum oocysts in the environment...
  38. ncbi Development of Fasciolopsis buski (Trematoda : Fasciolidae) in Hippeutis umbilicalis and Segmentina trochoideus (Gastropoda : Pulmonata)
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 86:324-6. 2000
    ..buski larvae in H. umbilicalis and S. trochoideus indicate that both these snail species are equally susceptible to F. buski...
  39. ncbi Oocysts of Cryptosporidium from snakes are not infectious to ducklings but retain viability after intestinal passage through a refractory host
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Vet Parasitol 77:33-40. 1998
    ..Under certain circumstances such as after the ingestion of C. serpentis-infected prey, herpetivorous birds may disseminate C. serpentis oocysts in the environment...
  40. ncbi Detection of Cryptosporidium parvum and Giardia lamblia carried by synanthropic flies by combined fluorescent in situ hybridization and a monoclonal antibody
    Thaddeus K Graczyk
    The W Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Am J Trop Med Hyg 68:228-32. 2003
    ....
  41. ncbi Accumulation of human waterborne parasites by zebra mussels (Dreissena polymorpha) and Asian freshwater clams (Corbicula fluminea)
    T K Graczyk
    Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Parasitol Res 89:107-12. 2003
    ..polymorpha can accumulate human waterborne parasites in proportion to ambient concentrations, these species of bivalves can be effective bioindicators of contamination of freshwater habitats with Cryptosporidium and Giardia...
  42. ncbi Value of antigen and antibody detection, and blood evaluation parameters in diagnosis of avian invasive aspergillosis
    T K Graczyk
    Department of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Mycopathologia 140:121-7. 1997
    ..platyrhynchos) indicate low applicability of these parameters in evaluation of a bird Aspergillus spp. status. Detection of circulating 55-kDa Aspergillus spp. Ag has high early predictive values for invasive aspergillosis in birds...
  43. ncbi Impact of bathers on levels of Cryptosporidium parvum oocysts and Giardia lamblia cysts in recreational beach waters
    Deirdre Sunderland
    Department of Environmental Health Sciences, Division of Environmental Health Engineering, Johns Hopkins Bloomberg School of Public Health, 615 N Wolfe Street, Baltimore, MD 21205, USA
    Water Res 41:3483-9. 2007
    ..lamblia cysts in recreational beach water. It is essential to test recreational waters for Cryptosporidium and Giardia when numbers of bathers are greatest, or limit the number of bathers in a recreational beach area...
  44. pmc Maximizing recovery and detection of Cryptosporidium parvum oocysts from spiked eastern oyster (Crassostrea virginica) tissue samples
    Autumn S Downey
    Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, 615 N Wolfe St, Baltimore, MD 21205, USA
    Appl Environ Microbiol 73:6910-5. 2007
    ..The results from this study have important implications for regulatory agencies charged with determining the safety of molluscan shellfish for human consumption...
  45. ncbi Enhanced malaria parasite transmission from helminth co-infected mice
    Gregory S Noland
    Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    Am J Trop Med Hyg 76:1052-6. 2007
    ..Malaria parasite prevalence and anemia were similar between co-infected and malaria only-infected mice, which suggested that enhanced malaria parasite transmission was due to helminth-induced modulation of host responses...
  46. ncbi Human waterborne trematode and protozoan infections
    Thaddeus K Graczyk
    Division of Environmental Health Engineering, Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Adv Parasitol 64:111-60. 2007
    ..g., Cryptosporidium oocysts) able to resist standard disinfection applied to drinking water...
  47. pmc Risks of recreational exposure to waterborne pathogens among persons with HIV/AIDS in Baltimore, Maryland
    Cynthia C McOliver
    Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
    Am J Public Health 99:1116-22. 2009
    ..We assessed the prevalence of recreational activities in the waterways of Baltimore, MD, and the risk of exposure to Cryptosporidium among persons with HIV/AIDS...
  48. pmc Efficacy of pyrvinium pamoate against Cryptosporidium parvum infection in vitro and in a neonatal mouse model
    Autumn S Downey
    Department of Molecular Microbiology and Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
    Antimicrob Agents Chemother 52:3106-12. 2008
    ..Based on these results, pyrvinium pamoate is a potential drug candidate for the treatment of cryptosporidiosis in both immunocompetent and immunocompromised individuals...
  49. doi Antibiotic resistant enterococci and staphylococci isolated from flies collected near confined poultry feeding operations
    Jay P Graham
    Johns Hopkins Bloomberg School of Public Health, Department of Environmental Health Sciences, Division of Environmental Health Engineering, Baltimore, MD 21205, USA
    Sci Total Environ 407:2701-10. 2009
    ..We report that flies collected near broiler poultry operations may be involved in the spread of drug resistant bacteria from these operations and may increase the potential for human exposure to drug resistant bacteria...
  50. ncbi Exacerbation of Plasmodium yoelii malaria in Echinostoma caproni infected mice and abatement through anthelmintic treatment
    Gregory S Noland
    Johns Hopkins Malaria Research Institute, Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
    J Parasitol 91:944-8. 2005
    ....
  51. pmc In vitro activity of pyrvinium pamoate against Entamoeba histolytica and Giardia intestinalis using radiolabelled thymidine incorporation and an SYBR Green I-based fluorescence assay
    Autumn S Downey
    Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
    J Antimicrob Chemother 64:751-4. 2009
    ..To assess the in vitro activity of the FDA-approved antihelminthic drug pyrvinium pamoate against Entamoeba histolytica and Giardia intestinalis...
  52. ncbi Is Giardia a living fossil?
    Thaddeus K Graczyk
    Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD 21205, USA
    Trends Parasitol 21:104-7. 2005
    ..New ultrastructural, biochemical and molecular phylogeny data about structures and processes involved in the generation of energy by currently known protists have forced the revision of understanding of the "tree of life"...
  53. pmc Bioaccumulation, retention, and depuration of enteric viruses by Crassostrea virginica and Crassostrea ariakensis oysters
    Sharon P Nappier
    Johns Hopkins Bloomberg School of Public Health, Department of Environmental Health Sciences, 615 N Wolfe St, Room E6620, Baltimore, MD 21205 2103, USA
    Appl Environ Microbiol 74:6825-31. 2008
    ..001) when the oyster also tested positive for MNV-1. This research helps assess the threat of C. ariakensis as a vehicle for viral pathogens due to the consumption of raw oysters and validates the role for MNV-1 as a surrogate for NoV...
  54. ncbi Equine Cryptosporidium parvum infections in western Poland
    Anna C Majewska
    Department of Biology and Medical Parasitology, Poznan University of Medical Sciences, 61 701, Poznan, Poland
    Parasitol Res 93:274-8. 2004
    ..5%. C. parvum oocysts were found only in fecal samples from mature horses, the number of oocysts was low, and infections were not associated with clinical signs. Oocysts were not found in human fecal specimens...
  55. pmc Cryptosporidium parvum and Giardia lamblia recovered from flies on a cattle farm and in a landfill
    Beata Szostakowska
    Department of Tropical Parasitology, Interfaculty Institute of Maritime and Tropical Medicine, Medical University of Gdansk, 81 519 Gdynia, Poland
    Appl Environ Microbiol 70:3742-4. 2004
    ..More pathogens were carried by flies from the cattle barn than from the landfill; 81% of C. parvum and 84% of G. lamblia pathogens were presumptively viable...
  56. pmc Genetic diversity of Cryptosporidium spp. in captive reptiles
    Lihua Xiao
    Division of Parasitic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30341, USA
    Appl Environ Microbiol 70:891-9. 2004
    ..Sequence and biologic characterizations indicated that the desert monitor genotype was Cryptosporidium saurophilum. Two host-adapted C. serpentis genotypes were found in snakes and lizards...
  57. ncbi Identification and determination of the viability of Giardia lamblia cysts and Cryptosporidium parvum and Cryptosporidium hominis oocysts in human fecal and water supply samples by fluorescent in situ hybridization (FISH) and monoclonal antibodies
    Vanessa Lemos
    Unidade de Protozoários Oportunistas VIH e Outras Protozooses, Unidade de Parasitologia e Microbiologia Médicas UPMM, Instituto de Higiene e Medicina Tropical, Rua da Junqueira, 96, 1349 008 Lisbon, Portugal
    Parasitol Res 98:48-53. 2005
    ..Our results confirm that this technique enables simultaneous visualization, species-specific identification, and viability determination of the organisms present in human fecal and water supply samples...
  58. ncbi Synanthropic flies as vectors of Cryptosporidium and Giardia among livestock and wildlife in a multispecies agricultural complex
    David Bruce Conn
    School of Mathematical and Natural Sciences, Berry College, Mount Berry, Georgia 30149, USA
    Vector Borne Zoonotic Dis 7:643-51. 2007
    ..89%) and Giardia (1.11%). In conclusion, these flies can serve as mechanical vectors of both Cryptosporidium and Giardia in all of these settings, and undoubtedly play a role in movement of these pathogens among the various host species...
  59. ncbi Fluorescent in situ hybridization as a tool to retrospectively identify Cryptosporidium parvum and Giardia lamblia in samples from terrestrial mammalian wildlife
    Malgorzata Bednarska
    Department of Parasitology, Institute of Zoology, Faculty of Biology, University of Warszawa, Warsaw, Poland
    Parasitol Res 100:455-60. 2007
    ..lamblia cysts. To control contamination, the management of pristine watersheds used for drinking water purposes should incorporate control measures for terrestrial wildlife, especially field rodents residing within such watersheds...
  60. pmc Microsporidian species known to infect humans are present in aquatic birds: implications for transmission via water?
    Anna Slodkowicz-Kowalska
    Departmetn of Biology and Medical Parasitology, Poznan University of Medical Sciences, Poznan, Poland
    Appl Environ Microbiol 72:4540-4. 2006
    ....
  61. ncbi Cryptosporidiosis in people sharing habitats with free-ranging mountain gorillas (Gorilla gorilla beringei), Uganda
    John Bosco Nizeyi
    Department of Wildlife and Animal Resource Management, Makerere University, Kampala Uganda
    Am J Trop Med Hyg 66:442-4. 2002
    ..parvum in the Bwindi Impenetrable National Park, Uganda. This human population will benefit from stronger compliance with park regulations regarding disposal of their fecal waste within the park boundaries...
  62. pmc Rapid microsphere assay for identification of cryptosporidium hominis and cryptosporidium parvum in stool and environmental samples
    Kakali Bandyopadhyay
    Scientific Resources Program, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Public Health Service, U S Department of Health and Human Services, Atlanta, Georgia 30333, USA
    J Clin Microbiol 45:2835-40. 2007
    ..In addition, the assay was more sensitive than DFA and provided species identification, which is an advantage for epidemiologic studies...
  63. ncbi Asymptomatic Enterocytozoon bieneusi microsporidiosis in captive mammals
    Anna Slodkowicz-Kowalska
    Department of Biology and Medical Parasitology, Poznan University of Medical Sciences, Poznan, Poland
    Parasitol Res 100:505-9. 2007
    ....
  64. ncbi Food-borne intestinal trematodiases in humans
    Bernard Fried
    Department of Biology, Lafayette College, Easton, PA 18042, USA
    Parasitol Res 93:159-70. 2004
    ..Because most of the implicated species are in the Echinostomatidae and Heterophyidae, emphasis in the review is placed on species in these families...
  65. ncbi Recent advances in the biology of Echinostoma species in the "revolutum" group
    Bernard Fried
    Department of Biology, Lafayette College, Easton, PA 18042, USA
    Adv Parasitol 58:139-95. 2004
    ..The review includes a list of researchers and their addresses who currently maintain such life cycles...
  66. ncbi Preliminary results of an anticircumsporozoite DNA vaccine trial for protection against avian malaria in captive African black-footed penguins (Spheniscus demersus)
    K Christiana Grim
    National Institute for Allergy and Infectious Diseases, The National Institutes of Health, Bethesda, Maryland 20892, USA
    J Zoo Wildl Med 35:154-61. 2004
    ..During the year of the vaccine trial, no mortalities due to malaria occurred and no undesirable vaccination side effects occurred. This is the first trial of an antimalarial vaccine in a captive penguin colony...
  67. pmc Measuring the effects of an ever-changing environment on malaria control
    Thomas F McCutchan
    Laboratory of Parasitic Diseases, Section of Growth and Development, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892 0425, USA
    Infect Immun 72:2248-53. 2004
    ..These results indicate that dominant environmental parameters associated with malaria deaths can be addressed before their application to a less malleable human system...
  68. pmc Quantitative assessment of contamination of fresh food produce of various retail types by human-virulent microsporidian spores
    Szymon Jedrzejewski
    Department of Biology and Medical Parasitology, Poznan University of Medical Sciences, Poland
    Appl Environ Microbiol 73:4071-3. 2007
    ....