There's no way to say that conclusively. Influenza also spreads via aerosols, and the size of the virion is in the same range as that of the coronavirus. It's u

There's no way to say that conclusively. Influenza also spreads via aerosols, and the size of the virion is in the same range as that of the coronavirus. It's unclear why the same physical measures, applied with the same degree of compliance, should fail to stop one but nearly completely stop the other.