间发病 meaning in Chinese

intercurrent disease

Preventing regular recurrence of the symptoms of a disease , as in malaria
防治间发病的防止一种病症的规则性发作，如疟疾
The cases had onset of symptoms between 16 december 2003 and 7 january 2004 . the last case was discharged in late january 2004 . there was no secondary spread in any of the cases
患者先后在2003年12月16日至2004年1月7日期间发病，而最后发病个案的患者已在2004年1月底出院。