RESUMO
The argasid ticks A. lahorensis can be infected with Coxiella burnetii on feeding on an infected rabbit. The adoptive pathogen reproduces in the ticks and accumulates in them up to 10(10) ID50 g(-1). Coxiella persists in the ticks at this level up to 156 days (the time of observation). The infected ticks transmit Coxiella to guinea pigs while sucking. The ticks show transovarial transmission of Coxilla during metamorphosis. On this basis and with consideration for the fact that A. lahorensis uses a wide host range, it can long starve and retains Coxiella burnetii in the foci of Q fever.
Assuntos
Vetores Aracnídeos/microbiologia , Coxiella burnetii/crescimento & desenvolvimento , Febre Q/transmissão , Carrapatos/microbiologia , Animais , Vetores Aracnídeos/crescimento & desenvolvimento , Feminino , Cobaias , Metamorfose Biológica , Coelhos , Carrapatos/crescimento & desenvolvimentoRESUMO
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.
