TICKS OF THE SUPERFAMILY IXODOIDEA AND RICKETTSIA PROWAZEKI
NAVAL MEDICAL RESEARCH UNIT NO 3 CAIRO (EGYPT) DEPT OF MEDICAL ZOOLOGY
Pagination or Media Count:
The following has been studied the susceptibility of the superfamily Ixodoidea to Rickettsia prowazeki by different means of infection feeding on infected guinea pigs, feeding through membrane, and introduction of rickettsiae directly into the tick body cavity, duration of rickettsial preservation within the body of infected ticks, and mechanism of infection transmission by ticks to healthy animals. Comparison of the infection in ticks by different introduction means of the agent demonstrated that rickettsiae can not only be introduced during a bloodmeal on an infected animal but also can later develop within the tick body. Ticks infected with R. prowazeki, do not transmit the latter transovarially to their progeny and also do not infect laboratory animals during feeding. Infection was induced in animals only by scarification of skin into which infected ticks H. asiaticum were crushed.