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demographic characteristics and infectious diseases of a population of american black bears in humboldt county, california.american black bears (ursus americanus) are common, widely distributed, and broad-ranging omnivorous mammals in northern california forests. bears may be susceptible to pathogens infecting both domestic animals and humans. monitoring bear populations, particularly in changing ecosystems, is important to understanding ecological features that could affect bear population health and influence the likelihood that bears may cause adverse impacts on humans. in all, 321 bears were captured between may ...201525700042
serologic survey for certain zoonotic diseases in black bears in california.black bears (ursus americanus) from 3 geographic areas of california were tested for antibodies against agents of 6 zoonotic diseases: toxoplasmosis (indirect hemagglutination), q fever (microagglutination), trichinosis (latex particle agglutination), botulism (passive hemagglutination), leptospirosis (plate agglutination), and plague (enzyme-linked immunosorbent assay). of 149 sera tested, 40 (27%) were positive for toxoplasma gondii antibodies and 25 (17%) had antibodies against coxiella burne ...19827174445
serologic evidence of yersinia pestis infection in small mammals and bears from a temperate rainforest of north coastal california.from 1983 to 1985, 463 serum samples from 11 species of mammals in redwood national park (rnp) (california, usa) were evaluated for antibodies to yersinia pestis by the passive hemagglutination method. yersinia pestis antibodies occurred in serum samples from 25 (36%) of 69 black bears (ursus americanus), one (50%) of two raccoons (procyon lotor), five (3%) of 170 dusky-footed woodrats (neotoma fuscipes), and one (less than 1%) of 118 deer mice (peromyscus maniculatus). two hundred seventy-three ...19892915403
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