为了防止感染，人体需要尽快修补伤口。

To prevent infection, the body needs to patch up wounds as quickly as possible.

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有时为了防止感染，伤口处会长出水泡。

Sometimes, in order to prevent infection, your body will produce fluid-filled blisters.

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为防止感染正确注射。

Shoot correctly to avoid infection.

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If you can block one of those people from getting the vaccine, you also stop-- from getting the disease-- you also stop all the people they would have transmitted it too from getting a disease.

如果你可以防止一个人感染疫苗,你同样可以防止...,刚才应该是感染疾病...,你就同样可以防止所有,可能已经接触过病毒的人群患病

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