@Nutmeg031992 @covidtweets Overall, I don't see a lot of clarity on what it takes (or ever took) to get infected under what conditions.
There are anecdotes about "fleeting transmission" with delta, but I don't think it's been well demonstrated that NEVER happened before or how much it happens now.
@肉豆蔻031992@covidtweets总体而言，我看不出在什么条件下感染（或曾经感染）需要多少明确信息。
关于delta的“快速传输”有很多轶事，但我不认为它已经被很好地证明以前从未发生过，或者现在发生了多少。