prevalence and diversity of tick-borne pathogens in nymphal ixodes scapularis (acari: ixodidae) in eastern national parks.tick-borne pathogens transmitted by ixodes scapularis say (acari: ixodidae), also known as the deer tick or blacklegged tick, are increasing in incidence and geographic distribution in the united states. we examined the risk of tick-borne disease exposure in 9 national parks across six northeastern and mid-atlantic states and the district of columbia in 2014 and 2015. to assess the recreational risk to park visitors, we sampled for ticks along frequently used trails and calculated the density of ...201628028138
spatial distribution of seroprevalence for anaplasma phagocytophilum, borrelia burgdorferi, ehrlichia canis, and dirofilaria immitis in dogs in washington, oregon, and california.background: in the us little spatially defined information regarding exposure to most vector-borne pathogens in dogs is available for the states of california (ca), oregon (or), and washington (wa). objectives: the purpose of the present study was to evaluate the spatial distribution of seroprevalence for 4 vector-borne pathogens, anaplasma phagocytophilum, borrelia burgdorferi, ehrlichia canis, and dirofilaria immitis, across the 3 western coastal states of the contiguous united states that ext ...201121827514
detection of babesia and anaplasma species in rabbits from texas and georgia, usa.rabbits have been shown to harbor a suite of zoonotic organisms, including a babesia species, borrelia burgdorferi, and anaplasma phagocytophilum. in this study, we conducted a molecular survey for various tick-borne pathogens in three species of rabbits from texas and georgia. of 18 black-tailed jackrabbits (lepus californicus) tested from texas, six (28%) were polymerase chain reaction (pcr) positive for babesia, and nucleotide sequencing revealed two distinct species or strains. two jackrabbi ...200616584322
genetic variants of anaplasma phagocytophilum infecting dogs in western washington state.eight dogs from western washington state suspected of being infected with anaplasma phagocytophilum because of the finding of morulae in peripheral blood neutrophils were studied for determination of the etiologic agent of disease. all cases were diagnosed between april 2003 and april 2004. six of the eight dogs had no travel history during the 6 months prior to presentation. two dogs had traveled within the northwest united states and canada. fever, lethargy, and anorexia were the most common c ...200515695682
isolation of the etiologic agent of human granulocytic ehrlichiosis from the white-footed mouse (peromyscus leucopus).we examined white-footed mice (peromyscus leucopus) from minnesota for infection with the etiologic agent of human granulocytic ehrlichiosis (hge). from april to september 1997, we collected p. leucopus from washington county, minnesota, an area enzootic for hge. blood was cultivated in hl60 cells for isolation of the hge agent. of 59 mice examined, only a single mouse was culture positive for the hge agent. the 16s ribosomal dna sequence of the isolate was determined to be identical to that of ...200111136794
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