Search Results - "Graczyk, T K"

Co-localized Crassostrea virginica and Crassostrea ariakensis Oysters differ in bioaccumulation, retention and depuration of microbial indicators and human enteropathogens by Nappier, S.P, Graczyk, T.K, Tamang, L, Schwab, K.J

“…To evaluate the bioaccumulation, retention and depuration rates of nine pathogens and surrogates when two oyster species were co-localized in tanks of…”
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Molecular markers and sentinel organisms for environmental monitoring by Graczyk, T.K., Conn, D.B.

“…Molecular methods are useful for both to monitor anthropogenic viral, bacterial, and protozoan enteropathogens, and to track pathogen specific markers in a…”
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Prevalence of Cryptosporidium,Giardia and Eimeria infections in post-weaned and adult cattle on three Maryland farms by Fayer, R, Trout, J.M, Graczyk, T.K, Lewis, E.J

“…The prevalence of Cryptosporidium, Giardia and Eimeria, in healthy, asymptomatic, post-weaned and mature cattle was investigated on three Maryland farms. One…”
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Echinostomiasis: a common but forgotten food-borne disease by Graczyk, T K, Fried, B

“…Human echinostomiasis, endemic to southeast Asia and the Far East, is a food-borne, intestinal, zoonotic parasitosis attributed to at least 16 species of…”
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Cryptosporidium oocysts in Bent mussels (Ischadium recurvum) in the Chesapeake Bay by GRACZYK, T. K, FAYER, R, LEWIS, E. J, TROUT, J. M, FARLEY, C. A

“…Filter-feeding molluscan shellfish can concentrate environmentally derived waterborne pathogens of humans, which can be utilized in the sanitary assessment of…”
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Accumulation of human waterborne parasites by zebra mussels (Dreissena polymorpha) and Asian freshwater clams (Corbicula fluminea) by Graczyk, T K, Conn, D B, Marcogliese, D J, Graczyk, H, De Lafontaine, Y

“…Zebra mussels (Dreissena polymorpha) and Asian freshwater clams (Corbicula fluminea) are nonindigenous invasive bivalves present in North American fresh waters…”
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House flies (Musca domestica) as transport hosts of Cryptosporidium parvum by Graczyk, T K, Cranfield, M R, Fayer, R, Bixler, H

“…Refuse and promiscuous-landing synanthropic filth flies, such as house flies (Musca domestica), are recognized as transport hosts for a variety of protozoan…”
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Cryptosporidium parvum Genotype 2 infections in free-ranging mountain gorillas (Gorilla gorilla beringei) of the Bwindi Impenetrable National Park, Uganda by Graczyk, T, DaSilva, A, Cranfield, M, Nizeyi, J, Kalema, G, Pieniazek, N

“…For behavioral research and due to growing ecotourism, some populations of free-ranging mountain gorillas (Gorilla gorilla beringei) have become habituated to…”
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Survival of infectious Cryptosporidium parvum oocysts in seawater and eastern oysters (Crassostrea virginica) in the Chesapeake Bay by Fayer, R. (ARS, USDA, Beltsville, MD.), Graczyk, T.K, Lewis, E.J, Trout, J.M, Farley, C.A

“…Oocysts of Cryptosporidium parvum placed in artificial seawater at salinities of 10, 20, and 30 ppt at 10 degrees C and at 10 ppt at 20 degrees C were…”
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Cattle near the Bwindi Impenetrable National Park, Uganda, as a reservoir of Cryptosporidium parvum and Giardia duodenalis for local community and free-ranging gorillas by NIZEYI, J. B, CRANFIELD, M. R, GRACZYK, T. K

“…The prevalence and intensity of shedding of Cryptosporidium parvum oocysts and Giardia duodenalis cysts was investigated in cattle grazing in the vicinity of…”
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Potential role of the Eastern oyster, Crassostrea virginica, in the epidemiology of Cryptosporidium parvum by Fayer, R. (Immunology and Disease Resistance Laboratory, ARS, USDA, Beltsville, MD.), Farley, C.A, Lewis, E.J, Trout, J.M, Graczyk, T.K

“…Oysters were placed in an aquarium containing artificial seawater, and Cryptosporidium parvum oocysts were added. Oocysts were later found in the gill…”
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Identification of Cryptosporidium felis in a cow by morphologic and molecular methods by Bornay-Llinares, F.J, Silva, A.J. da, Moura, I.N.S, Myjak, P, Pietkiewicz, H, Kruminis-Lozowska, W, Graczyk, T.K, Pieniazek, N.J

“…Apicomplexan Cryptosporidium parasites infect a wide range of vertebrate hosts. While some species are limited to a single host group, such as Cryptosporidium…”
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Temporal variability of Cryptosporidium in the Chesapeake Bay by FAYER, R, TROUT, J. M, LEWIS, E. J, XIAO, L, LAL, A, JENKINS, M. C, GRACZYK, T. K

“…Although Cryptosporidium has been found worldwide in molluscan shellfish from waters contaminated with human and animal feces, little or no related…”
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Giardia sp. cysts and infectious cryptosporidium parvum oocysts in the feces of migratory Canada geese (Branta canadensis) by Graczyk, T.K. (John Hopkins University, Baltimore, MD.), Fayer, R, Trout, J.M, Lewis, E.J, Farley, C.A, Sulaiman, I, Lal, A.A

“…Fecal droppings of migratory Canada geese, Branta canadensis, collected from nine sites near the Chesapeake Bay (Maryland), were examined for the presence of…”
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Environmental and Geographical Factors Contributing to Watershed Contamination with Cryptosporidium parvum Oocysts by Graczyk, Thaddeus K., Evans, Barry M., Shiff, Clive J., Karreman, Hubert J., Patz, Jonathan A.

“…Cryptosporidium parvum is a waterborne parasite which infects cattle and produces life-threatening zoonosis in people with impaired immune systems. Digital…”
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Cryptosporidium sp. and Giardia sp. Infections in Mountain Gorillas (Gorilla gorilla beringei) of the Bwindi Impenetrable National Park, Uganda by Nizeyi, John Bosco, Mwebe, Robert, Nanteza, Ann, Cranfield, Michael R., Gladys R. N. N. Kalema, Graczyk, Thaddeus K.

“…For conservation purposes and because of growing ecotourism, some mountain gorilla (Gorilla gorilla beringei) populations have been habituated to humans. Fecal…”
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Capillaria hepatica (Nematoda) Infections in Human-Habituated Mountain Gorillas (Gorilla gorilla beringei) of the Parc National de Volcans, Rwanda by Graczyk, Thaddeus K., Lowenstine, Linda J., Cranfield, Michael R.

“…Habituation to humans of free-ranging populations of endangered mountain gorillas (Gorilla gorilla beringei) raised concern of anthropozoonotic transmission of…”
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Detection of Cryptosporidium oocysts and Giardia cysts in the tissues of eastern oysters (Crassostrea virginica) carrying principal oyster infectious diseases by Graczyk, T.K, Farley, C.A, Fayer, R, Lewis, E.J, Trout, J.M

“…The potential cross-reactivity of the combined Cryptosporidium/Giardia direct immunofluorescence antibodies (IFA) of MERIFLUOR™ and HYDROFLUOR™-COMBO tests was…”
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Determining potential indicators of Cryptosporidium oocysts throughout the wastewater treatment process by Cheng, H-W A, Broaders, M A, Lucy, F E, Mastitsky, S E, Graczyk, T K

“…Most research on wastewater treatment efficiency compliance focuses on physicochemical and microbial indicators; however, very little emphasis has been placed…”
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Giardia duodenalis cysts of genotype A recovered from clams in the Chesapeake Bay subestuary, Rhode River by Graczyk, T K, Thompson, R C, Fayer, R, Adams, P, Morgan, U M, Lewis, E J

“…Filter-feeding molluscan shellfish can concentrate zoonotic and anthroponotic waterborne pathogens. Cysts of Giardia sp. were detected by immunofluorescent…”
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