| sheep consumption: a possible source of spongiform encephalopathy in humans. | a fatal spongiform encephalopathy of sheep and goats (scrapie) shares many characteristics with creutzfeldt-jakob disease (cjd), a similar dementing illness of humans. to investigate the possibility that cjd is acquired by ingestion of contaminated sheep products, we collected information on production, slaughtering practices, and marketing of sheep in pennsylvania. the study revealed that sheep were usually marketed before central nervous system signs of scrapie are expected to appear; breeds k ... | 1985 | 3915057 |
| veterinary services to the pennsylvania sheep industry. | questionnaires on ovine management and disease were distributed to sheep producers and large animal veterinarians in pennsylvania. returns indicated economic analysis of veterinary services to eastern farm flocks to be of primary importance. although most producers were reluctant to request veterinary services because of cost, the average expenditure for veterinary services was reasonable ($143 per flock per year). producers appeared to have little awareness of expected benefits from veterinary ... | 1980 | 6772619 |
| immunohistochemical detection of scrapie prion proteins in clinically normal sheep in pennsylvania. | following diagnosis of scrapie in a clinically suspect suffolk sheep, 7 clinically normal flockmates were purchased by the pennsylvania department of agriculture to determine their scrapie status using an immunohistochemical procedure. two of the 7 euthanized healthy sheep had positive immunohistochemical staining of the prion protein of scrapie (prp-sc) in their brains, nictitating membranes, and tonsils. the prp-sc was localized in the areas of the brain where, histopathologically, there was n ... | 2001 | 11243373 |
| q fever--california, georgia, pennsylvania, and tennessee, 2000-2001. | q fever is a zoonotic disease caused by the bacterium coxiella burnetii. the most common reservoirs are domesticated ruminants, primarily cattle, sheep, and goats. humans acquire q fever typically by inhaling aerosols or contaminated dusts derived from infected animals or animal products. its highly infectious nature and aerosol route of transmission make c. burnetii a possible agent of bioterrorism. although up to 60% of initial infections are asymptomatic, acute disease can manifest as a relat ... | 2002 | 12403408 |
| new ruminant hosts and wider geographic range identified for babesia odocoilei (emerson and wright 1970). | babesia odocoilei was found to infect two previously unknown host species, desert bighorn sheep (ovis canadensis nelsoni) and musk oxen (ovibos moschatus), both of which are members of the family bovidae. previously, b. odocoilei has been reported in only cervidae hosts. new geographic regions where b. odocoilei infections have not been reported previously include pennsylvania and new york, where fatal babesiosis has occurred in reindeer (rangifer tarandus tarandus); new hampshire, where elk (ce ... | 2005 | 16456156 |
| evaluation of an inhouse rapid elisa test for detection of giardia in domestic sheep (ovis aries). | sheep (ovis aries) are increasingly used at our institution as models of human disease. within the research environment, routine husbandry and handling of sheep has potential for transmission of zoonotic agents, including giardia. the prevalence of giardia in sheep may approach 68%. classic diagnostic testing involves microscopic examination for fecal cysts or trophozoites; however, limitations of microscopy include time, labor, and potential false-negative results due to intermittent shedding. ... | 2010 | 21205445 |
| incidence of listeriosis in pennsylvania livestock. | | 1967 | 5624198 |