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-PI3 vaccine during summer conditions (high ambient temperatures) with those of calves administered the same vaccine during moderate conditions. The hypothesis was that calves housed in a high–ambient temperature environment would have a decreased

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in American Journal of Veterinary Research

Each year, an estimated 8 to 10 million animals are housed in animal shelters, veterinary clinics, and boarding facilities. 1 The proximity of animals to each other in dense animal housing environments increases the likelihood of exposure to

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in American Journal of Veterinary Research

Listeria spp are ubiquitous in nature, but only Listeria monocytogenes poses an important health risk. The facultatively anaerobic, non–spore-forming coccobacillus lives in a plant and soil environment and can be found in vegetables, sewage

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in American Journal of Veterinary Research

conducted to determine the virologic status of cattle subclinically infected with PPV and the farm environment of those cattle. We compared the PPV DNA load of calves without clinical signs of PPV infection with the DNA load of calves clinically affected

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in American Journal of Veterinary Research

, whereas foals of other mares from the same environment are consistently unaffected. 6 Epidemiologic evidence indicates that foals with naturally occurring R equi –associated pneumonia become infected early in life. 7 The source of infection for foals

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in American Journal of Veterinary Research

feces, soil, and water. 9–12 In a study 13 of risk factors for bovine tuberculosis in cattle herds, investigators determined that the presence of M bovis in the environment remained a risk factor for infection over the 12-month period after infected

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in American Journal of Veterinary Research

several studies 1–9 have been conducted to help clinicians and researchers understand the ecology of E coli O157:H7 in farm environments as well as transmission routes into the human food chain. Prevalence of E coli O157:H7 in beef cattle is highly

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in American Journal of Veterinary Research

Within multicat environments such as animal shelters, breeding catteries, cat shows, research colonies, and even multicat households, IURD (ie, rhinitis, pharyngitis, and keratoconjunctivitis caused by infectious organisms) is a common and major

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in American Journal of Veterinary Research

temperatures. Weather conditions during the first week at the feeding location may contribute to the stress associated with acclimation to a new environment, new social order, and processing procedures. 25 In the present study, however, a clear relationship

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in American Journal of Veterinary Research

is widely speculated that pulmonary infection results from inhalation of soil-derived virulent R equi found in dust from a contaminated environment. 10–12 Evidence from studies 10,13 conducted on other continents indicates that airborne

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in American Journal of Veterinary Research