Covert infection

• 隐性感染

Covert infection的用法和样例：

例句

1. A hypothesis of non-pathogenic virus being a possible cause of subclimcal JE virus infection was proposed and discussed.
   作者认为这些非致病性虫媒病毒在生态学中的干扰作用可能是引起乙脑隐性感染的原因之一。