@0bj3ctivity @MichaelSFuhrer That is to say, you won't get 100% reduction even with 100%-ish masks and even with 100%-ish compliance with indoor masking if people are taking them off in e.g. restaurants. But you probably would get more than 20%.
@0bj3ctivity @MichaelSFuhrer 也就是说，即使使用 100% 的口罩，甚至 100% 的室内口罩合规性，如果人们在例如餐馆。但你可能会得到超过 20%。