the serologic prevalence of q fever (coxiella burnetii) complement-fixing antibodies in the peninsular bighorn sheep of southern california.q fever is a rare illness in the southern california desert. during the past 34 years only 6 patients have been diagnosed with the disease at the eisenhower medical center, a referral center for much of the desert and surrounding mountains. in all but 2 instances, q fever was identified in patients who have been in contact with imported domestic sheep who are brought to the desert to graze and lamb in the fall and winter. the sheep are sent back to idaho, wyoming, and montana in the spring. with ...200616896140
coxiella burnetii in northern fur seal (callorhinus ursinus) placentas from st. paul island, alaska.abstract the decline in the number of northern fur seal (nfs; callorhinus ursinus) pups on st. paul island, alaska, has led to multidisciplinary research, including investigation into issues of reproductive health and success. given the recent identification of coxiella burnetii in the placenta of two other marine mammal species, nfs placentas were collected from reef rookery on st. paul island, alaska, during the 2010 pupping season, examined histologically, and tested for c. burnetii using p ...201122017469
disease complexity in a declining alaskan muskox (ovibos moschatus) population.the muskox ( ovibos moschatus ) population inhabiting the eastern north slope (ens) of alaska, us declined dramatically during 1999-2006, whereas populations in western alaska (wa) were stable or increasing. to understand morbidity and mortality factors contributing to the decline, alaska department of fish and game conducted pathologic investigations of carcasses from 2005 until 2008. additionally, archived sera from both ens and wa muskoxen collected during 1984-92, before the documented begin ...201728099077
coxiella burnetii exposure in northern sea otters enhydra lutris kenyoni.valvular endocarditis has been well described in northern sea otters enhydra lutris kenyoni of alaska and in many cases no cause has been identified. it is also one of the most common conditions observed in people with chronic coxiella burnetii infection. given the high levels of c. burnetii exposure in marine mammals distributed throughout the same geographic range as the northern sea otter, and the presence of valvular lesions seen in otters, the objective of this study was to determine the le ...201525958809
prevalence of coxiella burnetii and brucella spp. in tissues from subsistence harvested northern fur seals (callorhinus ursinus) of st. paul island, alaska.the northern fur seal (callorhinus ursinus) is an important cultural and nutritional resource for the aleut community on st. paul island alaska. in recent years, an increasing number of zoonotic pathogens have been identified in the population, but the public health significance of these findings is unknown. to determine the prevalence of coxiella burnetii and brucella spp. in northern fur seal tissues, eight tissue types from 50 subsistence-harvested fur seals were tested for bacterial dna by r ...201425266039
coxiella burnetii in northern fur seals and steller sea lions of alaska.coxiella burnetii, a zoonotic bacterium, has recently been identified in several marine mammal species on the pacific coast of north america, but little is known about the epidemiology, transmission, and pathogenesis in these species. we tested sera archived from northern fur seals (nfs, callorhinus ursinus; n=236) and steller sea lions (ssl, eumetopias jubatus; n=72) sampled in alaska for c. burnetii antibodies, and vaginal swabs from nfs (n=40) for c. burnetii by qpcr. the antibody prevalence ...201323568925
apoptosis in normal and coxiella burnetii-infected placentas from alaskan northern fur seals (callorhinus ursinus).in 2010, coxiella burnetii was identified in 75% of northern fur seal placentas from a single rookery in alaska, but nothing was known about the significance of this organism in the population. although many infectious organisms cause increased cell death, c. burnetii has been shown to suppress apoptosis of the host macrophages as an intracellular survival mechanism. to determine if infection induces a similar functional change in the placenta, immunohistochemistry for antibodies to cleaved casp ...201323125144
multiple strains of coxiella burnetii are present in the environment of st. paul island, 2010, coxiella burnetii was identified at a high prevalence in the placentas of northern fur seals (callorhinus ursinus) collected at a single rookery on st. paul island alaska; an area of the united states where the agent was not known to be present. as contamination was hypothesized as a potential cause of false positives, but nothing was known about environmental c. burnetii in the region, an environmental survey was conducted to look for the prevalence and distribution of the organism on ...201322747976
Displaying items 1 - 8 of 8