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[the formation of proventriculus block, alimentary activity and mortality of flea amphipsylla primaris primaris infected with yersinia pestis].the results of experiments held in 1982-1983 in tuva plague natural focus with flea amphipsylla primaris primaris (jordan et rothschild, 1915) from natural populations, whish were inflected and fed on specific host--flat-headed vole (alticola strelzovi), are analyzed. the initial infectivity of the insects in autumn was higher than in spring: 90 and 50 % respectively. accumulation of the agent in aggregated form in the organism of a. p. primaris, estimated by the quantity of fleas with <<lumps>> ...200616913294
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