Personto - person spread generally does not occur.

人与人之间接触一般不传播。

youdao

How long can an infected person spread swine flu to others?

人感染猪流感，会出现何种迹象和症状？

youdao

A person who has chickenpox can spread the virus even before he or she has any symptoms.

水痘患者在出现任何症状之前都可以传播病毒。

youdao

But experts say non-communicable diseases -- those that do not spread from person to person -- are the leading killer today.

VOA: special.2011.05.11

One can stop spread of disease through a community without being 100% effective in each person who gets the vaccine.

疫苗能够遏制疾病在整个社区中传播,虽然对于每个人来说它并非百分之百有效

耶鲁公开课 - 生物医学工程探索课程节选

Anytime there's a risk that hits one person or one country the financial markets would spread it out over everybody and it gets very small.

如果有风险袭击一个人或者一个国家,金融市场就会将风险分摊到所有人身上,风险就变得微乎其微。

耶鲁公开课 - 金融市场课程节选

Direct, person-to-person spread of anthrax is extremely unlikely.

CNN: Ten things you need to know about anthrax

But even if such recommendations were universally followed, they would not halt the spread of the disease, she said, noting that an infected person can spread the virus prior to getting flu symptoms.

CNN: Official: Closing schools in face of swine flu may not be best choice

In fact, her sister, Alivia Kropp, was the first person to spread the word and encourage her to speak out.

CNN: STORY HIGHLIGHTS