infectious相关的词根或词缀是: facfactfectficfig facfic

Dr. peter hotez is an infectious disease expert .

彼得霍特兹博士是一名传染病专家。

These countries also have among the highest burdens of infectious diseases .

这些国家的传染性疾病的几率也都很高。

And the boy often broke into an infectious laugh .

于是男孩就会爆发出有感染力的大笑。

Take a simple example like infectious disease .

简单地以传染病为例。

The article is featured in the journal clinical infectious diseases .

这篇文章刊登在临床传染病杂志上。