Elon Musk: @ScottAdamsSays 是的，但这在政府和疫苗制造商知道后很长一段时间都没有向公众披露。不酷。 也就是说，很明显，如果有人咳嗽少了，传播就会有所减少。

原推：@ScottAdamsSays Yes, but this was not disclosed to the public for a long time after the government and vaccine makers knew. Not cool.

That said, obviously if someone is coughing less, there is some reduction in transmission.
https://twitter.com/elonmusk/status/1618345146516381698