再侵染源secondary source of infection
呼吸道感染respiratory infection
披衣菌感染症chlamydial infection
膀胱感染bladder infection
院内感染ward infection
上呼吸道感染URI(Upper respiratory infection)
侵染infect【植保】 微;infection【植保】 微【昆】虫的\ninfest【昆】;infestation【医】
慢病毒感染slow virus infection