epidemiology of potomac horse fever: an investigation into the possible role of non-equine mammals.a serological study of antibodies to ehrlichia risticii was carried out on 10 species of wild and domestic mammals found on or near 21 horse farms in an area of the usa in which potomac horse fever is endemic. no antibodies were found in 133 peridomestic rodents (norway rats and house mice), nor in 108 wild rodents (white-footed mice and meadow voles) captured on farms. three of the six domestic animal species examined, cats, pigs and a goat, showed serological evidence of exposure to e risticii ...19892773237
services provided by and veterinary education of small ruminant practitioners. 19968707671
antibacterial-coated tracheal tubes cleaned with the mucus shaver : a novel method to retain long-term bactericidal activity of coated tracheal assess the long-term benefit from antibacterial coatings of the tracheal tube (ett), and to keep clean the lumen of the ett.200616601964
high prevalence and abundant atypical genotypes of toxoplasma gondii isolated from lambs destined for human consumption in the usa.little information is available on the presence of viable toxoplasma gondii in tissues of lambs worldwide. the prevalence of t. gondii was determined in 383 lambs (<1 year old) from maryland, virginia and west virginia, usa. hearts of 383 lambs were obtained from a slaughter house on the day of killing. blood removed from each heart was tested for antibodies to t. gondii by using the modified agglutination test (mat). sera were first screened using 1:25, 1:50, 1: 100 and 1:200 dilutions, and hea ...200818191859
cryptosporidium xiaoi n. sp. (apicomplexa: cryptosporidiidae) in sheep (ovis aries).a new species, cryptosporidium xiaoi, is described from sheep. oocysts of c. xiaoi, previously identified as the cryptosporidium bovis-like genotype or as c. bovis from sheep in spain, tunisia, united kingdom, and the united states are recorded as such in genbank (eu408314-eu408317, eu327318-eu327320, ef362478, ef514234, dq991389, and ef158461). oocysts obtained from naturally infected sheep were infectious for a lamb and oocysts from that lamb were infectious for three other lambs. the prepaten ...200919501967
phalaris arundinacea (reed canarygrass) grass staggers in beef cattle.four adult mixed-breed beef cows from a cow-calf operation in west virginia were referred to the virginia-maryland regional college of veterinary medicine in march 2009 with weakness, ataxia, hind limb paresis progressing to lateral recumbency, and death within 2-3 days. histologically, there was accumulation of light brown, granular pigment in neurons of the ventral gray horns of the spinal cord (more severe in thoracic and lumbar sections), brain stem, and pons, resulting in distortion and bul ...201020807948
prevalence and molecular characterization of cryptosporidium and giardia species and genotypes in sheep in the united kingdom and australia sheep have been implicated as sources of cryptosporidium and giardia that infect humans, but no such studies have been conducted in north america. therefore, a study was undertaken to investigate the prevalence of these parasites in sheep on a farm in maryland. feces were collected from 32 pregnant ewes 1, 2, and 3 days after parturition and from each of their lambs 7, 14, and 21 days after birth. the presence of cryptosporidium oocysts and giardia cysts was d ...200717335979
nested case-control study of tumors of the hemopoietic and lymphatic systems among workers in the meat industry.workers in the meat industry are exposed to viruses that cause leukemia and lymphoma in cattle and chickens, and also to carcinogenic chemical agents. this case-control study, nested in a cohort of members of a meatcutters' union in baltimore, maryland, investigated whether occupational exposures are associated with death from tumors of the hemopoietic and lymphatic systems. cases of these tumors represent all deaths which occurred in the cohort between 1949 and 1980. excess risks of tumors of t ...19989554414
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