纽约五分之一的人感染了冠状病毒，但只有十分之一表现出症状

这是抗体测试目前非常精确的一个数据。这也解释了很多人的困惑，即很多明显似乎应该被感染的人，为什么没有出现特征？这个数据另外一个好处是可以计算真实的死亡率。如果按照这个数据，死亡率就会极大降低。这是当初支持群体免疫观点科学家的胜利。

A Fifth of New York City Exposed to Virus, Antibody TestsFind

By Andrew Mach

(Bloomberg) —

1 in 5 exposed to Covid-19 in NYC

Far more New Yorkers have been infected by coronavirus than have been diagnosed, Gov. Andrew Cuomo said Thursday. An antibody study found 13.9% of people randomly tested in the state showed signs of the virus. That’s about 2.7 million residents, 10 times more than the official count.