@tiggerbluedevil @mskathleenquinn @andyaschmidt By May it had started to become apparent it was no longer true as Delta started to appear.
So, hurray, we had a nice little 2-3 month window of known protection against transmission.
Other than that, no.
https://www.nytimes.com/2021/0...
@五月份，随着Delta的出现，这一点开始变得明显，不再是事实。
所以，万岁，我们有一个很好的2-3个月的已知预防传播窗口。
除此之外，没有。
https://www.nytimes.com/2021/0...