易感者带上口罩传染率为45%，减少为原来的1/2，传播者带上口罩传染率

易感者带上口罩传染率为45%，减少为原来的1/2，传播者带上口罩传染率为30%，减少为原来的1/3，若两者均带上口罩，传染率为18%，减少为原来的1/5。

The infection rate of susceptible persons wearing masks is 45%, which is reduced to 1 / 2 of the original. The infection rate of communicators wearing masks is 30%, which is reduced to 1 / 3 of the original. If both persons wear masks, the infection rate is 18%, which is reduced to 1 / 5 of the original.

The infection rate of susceptible people wearing masks is 45%, which is reduced to 1/2 of the original, and that of disseminators wearing masks is 30%, which is reduced to 1/3 of the original. If both people wear masks, the infection rate is 18%, which is reduced to 1/5 of the original.