波士顿学院韦斯顿实验室主任约翰·埃贝尔注意到，从地震学角度说，现在似乎重现了上世纪中期的一系列地震。

John Ebel, director of Boston College's Weston Observatory, noted that seismically, the current period seemed to resemble the cluster of large earthquakes in the middle of the last century.

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“血凝素是一个诱饵”，波士顿哈佛医学院的免疫学家韦恩·马拉斯科说，“这些球状头部可以有很多变异还不对病毒产生不好的影响。”

"Haemagglutinin's a decoy," says Wayne Marasco, an immunologist at Harvard Medical School in Boston. "Those globular heads can undergo many mutations without the virus suffering any ill effects."

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