Publications

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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
yersinia philomiragia sp. n., a new member of the pasteurella group of bacteria, naturally pathogenic for the muskrat (ondatra zibethica).a bacterium experimentally pathogenic for muskrats (ondatra zibethica), white mice, mountain voles (microtus montanus), and deer mice (peromyscus maniculatus) was isolated from the tissues of a sick muskrat captured on the bear river migratory bird refuge (brigham city, utah) and from four surface water samples collected within 15 miles of that point. in culture, the cells are chiefly coccoid, but in the tissues of muskrats and voles they resemble the bizarre forms of yersinia pestis, except for ...19695361214
dynamics of plague in a gunnison's prairie dog colony complex from new mexico.a plague (yersinia pestis) epizootic spread through gunnison's prairie dogs (cynomys gunnisoni), and possibly other rodent species, in the moreno valley in north-central new mexico between winter 1984-1985 and autumn 1987. we observed the progress of the epizootic and subsequent population recovery at four prairie dog towns within the valley during this period. at two towns (midlake and val verde) the prairie dogs were marked prior to the epizootic. at two additional towns (vega and south entran ...19979391954
no evidence of deer mouse involvement in plague (yersinia pestis) epizootics in prairie dogs.plague, the disease caused by the bacterium yersinia pestis, can have devastating impacts on black-tailed prairie dog (cynomys ludovicianus) colonies. one suggested mechanism behind sporadic prairie dog die-offs involves an alternative mammal host, such as the deer mouse (peromyscus maniculatus), which often inhabits prairie dog colonies. we examined the flea populations of deer mice to investigate the potential of flea-borne transmission of plague between deer mice and prairie dogs in northern ...200818447619
exposure of small rodents to plague during epizootics in black-tailed prairie dogs.plague, caused by the bacterium yersinia pestis, causes die-offs of colonies of prairie dogs (cynomys ludovicianus). it has been argued that other small rodents are reservoirs for plague, spreading disease during epizootics and maintaining the pathogen in the absence of prairie dogs; yet there is little empirical support for distinct enzootic and epizootic cycles. between 2004 and 2006, we collected blood from small rodents captured in colonies in northern colorado before, during, and for up to ...200818689662
prevalence of yersinia pestis in rodents and fleas associated with black-tailed prairie dogs (cynomys ludovicianus) at thunder basin national grassland, wyoming.rodents (and their fleas) that are associated with prairie dogs are considered important for the maintenance and transmission of the bacterium (yersinia pestis) that causes plague. our goal was to identify rodent and flea species that were potentially involved in a plague epizootic in black-tailed prairie dogs at thunder basin national grassland. we collected blood samples and ectoparasites from rodents trapped at off- and on-colony grids at thunder basin national grassland between 2002 and 2004 ...200818689663
modeling the ecologic niche of plague in sylvan and domestic animal hosts to delineate sources of human exposure in the western united states.plague has been established in the western united states (us) since 1900 following the west coast introduction of commensal rodents infected with yersinia pestis via early industrial shipping. over the last century, plague ecology has transitioned through cycles of widespread human transmission, urban domestic transmission among commensal rodents, and ultimately settled into the predominantly sylvan foci that remain today where it is maintained alternatively by enzootic and epizootic transmissio ...201526713244
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