2月21号爆发前,4.6%人口已经有抗体了,这样能追溯到去年秋天



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送交者: 2pz 于 2020-05-21 14:16:02

回答: 意大利证实新冠早就存在于献血者。 由 胡涂仙 于 2020-05-21 14:02:16

The study of a random sample of blood donors with no symptoms showed that 4.6 per cent already had antibodies against the virus at the start of the epidemic.

That percentage rose to 7 per cent by the beginning of April, when Italy was under lockdown.

The researchers analysed samples from 800 blood donations between February 8 and April 24

The first domestically transmitted disease was recorded on February 21.

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