Organizer: Shuji ANDO
Tsutsugamushi disease, scrub typhus, transmitted by Leptotrombidium mites, has been recorded in old Japanese literatures, and its modern medical research rose in the early 20th century in Japan. Even now, a considerable number of scrub typhus cases have been occurred, and distribute in wide areas of Asia and Oceania. Ticks have been reported to possess various types of rickettsial agents in Japan. Case reports on Japanese spotted fever casing by Rickettsia japonica are continuing to increase. Until now, R. japonica has isolated and/or detected from various ixodids. And recent year, a patient of Far Eastern spotted fever by R. heilongjiangensis was identified, also its vector and its natural cycle were confirmed in Japan. Moreover, spotted fever cases by R. helvetica and R. tamurae have been reported. In Japan of the Far East having a small country, diversity of acari-borne infectious diseases continues deepening more and more. In this symposium, we will discuss and summarize about various human acari-borne infectious diseases and their acari-vectors in Far East.