نتایج جستجو برای: rickettsia
تعداد نتایج: 3503 فیلتر نتایج به سال:
The anti-rickettsial activity of azithromycin and clarithromycin was studied in Vero cells. The rate of rickettsial inhibition-growth caused by both macrolides was determined using rickettsial counts and ELISA. Both macrolides inhibited > 50% the growth of Rickettsia conorii and Rickettsia typhi at concentrations of 1.0 and 0.1 mg/L, respectively. The growth of Coxiella burnetii was inhibited t...
The hemolysis of sheep red blood cells by Rickettsia prowazeki has been characterized. A requirement for the adsorption of the rickettsia to the erythrocyte was indicated. No indication of the production of a soluble hemolysin was observed. Neither adsorption nor hemolysis can proceed at 0 C. The hemolytic process is rapid with a half-time of less than 30 min, and both the rate and extent are p...
To determine previous exposure and incidence of rickettsial infections in western Kenya during 2007-2010, we conducted hospital-based surveillance. Antibodies against rickettsiae were detected in 57.4% of previously collected serum samples. In a 2008-2010 prospective study, Rickettsia felis DNA was 2.2× more likely to be detected in febrile than in afebrile persons.
Dear Editor, Spotted fever group (SFG) rickettsiae are obligate intracellular Gram-negative bacteria that are most commonly transmitted by a range of ticks and fleas. Recently, attention has become focused on mosquitoes as vectors of SFG rickettsiae with Rickettsia felis being identified by PCR in Aedes spp., Anopheles spp. and Mansonia uniformis in Africa,1–3 and Anopheles sinensis and Culex p...
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