Iu Iu Tikhonova

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The authors' studies have established that the concentration of Rickettsia typhi may increase about 100-fold in the infected Ornithonyssus bacoti mites. At the time, when on feeding 20 to 200 adult mites on guinea-pigs and albino rats 4 to 36 days after inoculation, they did not transmit Rickettsia typhi on blood sucking.
Experimental studies have demonstrated that the mosquitoes Cx. p. f. molestus fed with virus-containing suspensions, by using an artificial membrane and hygroscopic surface, are infected in 60 to 100% cases and transmit the accepted pathogen of West Nile fever (WNF) to newborn albino mice on blood sucking. The mosquitoes of this species maybe involved in(More)
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