The vaccine is derived from the most commonly circulating strain of rotavirus, and also offered good protection against some other strains across the two-year period.

这种疫苗是根据最常见的轮状病毒毒株制成的，而且在两年的时间里也能很好地保护人体不受其它一些毒株的感染。

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Give your eyes time to relax, and a chance to get the blood circulating to prevent eye strain and stiff muscles.

要让眼睛放松，使血液循环尽可能顺畅，以防止眼睛疲劳和肌肉僵硬。

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However, no-one outside of Mexico has yet died, leading to Suggestions that the severity of the cases there may be due to the strain mixing with a second unrelated virus circulating in the community.

然而，墨西哥城外没有人因此而死亡，这可以得出，疫情安全的严重性可能是由于在社区范围办传播的二级的不相联系的病毒和过度的紧张混淆起来。

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That said, it is still possible to get the flu, (a different circulating strain), but the chances are much less likely.

FORBES: 2013 Flu Season: How to Protect Yourself

Mr Reddy stressed that there were no signs of a tamiflu-resistant strain of H1N1 circulating in the community.

BBC: Tamiflu

People who live in institutions, such as a university, school or hospital, are particularly prone to getting any new strain that is circulating.

BBC: The flu virus that nearly killed me