It derives from a swine influenza virus but the new strain has been found only in people. No pigs have been confirmed to be sick with it.

这种病毒源自猪流感病毒，但是一种仅仅在人体发现的病毒。没有猪因为该病毒发病。

youdao

Because her condition has worsened, Heather is now being home-schooled in order to limit her contact with children who may be sick with something such as the flu.

因为她的病情已经恶化，Heather现在在家里上学，为了减少她与生病的孩子的接触，比如流感。

youdao

They wanted it to be a place in a different way of working with sick people.

他们希望这里能成为一个以不同方式与病人合作的地方。

youdao

They worry about close contact with others who may be sick.

VOA: special.2009.07.14

Avoid contact with people who appear to be sick.

VOA: special.2009.04.29

Risk pools would be overloaded with sick people whose claims would drive up premiums for everyone, forcing out more and more healthy buyers.

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Hospitals will be overrun with sick highly contagious people whom they cannot help and existing patients needing operations, dialysis or help with complicated childbirth will suffer.

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"No parent would want their child used in an experiment on drug testing but the point is children are getting drugs all the time and research could be ongoing with sick children, " he said.

BBC: Firms attacked over child medicines