@erroltps @TrumpUndead @jonathanchait No they didn't. This was what CDC was saying in January 2021. They didn't know whether it would keep you from contracting or spreading the virus. https://twitter.com/AeonCoin/s...
@erroltps @TrumpUndead @jonathanchait 不，他们没有。这就是 CDC 在 2021 年 1 月所说的话。他们不知道这是否会阻止您感染或传播病毒。 https://twitter.com/AeonCoin/s...