rabies狂犬病rdlapse复发relapsing fever回归热related vibrios相关弧菌remittent fever弛张热remittent stage缓解期repeated infection重复感染reservoir host贮存宿主retrovirus人类逆转录病毒ribavirin三氮唑核苷rickettsemia立克次体血症rickettsia立克次体rickettsia buretii伯纳特立克次体rickettsia mooseri莫氏立克次体rickettsia ortientalis东方立克次体rickettsia prowazekii普氏立克次体rickettsia tsutsugamushi恙虫病立克次体rickettsiosis立克次体病roseola infantum幼儿急疹rubella风疹rubeola麻疹Russion spring-summer encephatitis苏联春夏型脑炎，森林脑炎