3 ms·
The hypothesis for why masks work is due to the laboratory-measured reduction in transmission from the host. The only way to test this is to have a large popula
by lern_too_spel 5y ago
The hypothesis for why masks work is due to the laboratory-measured reduction in transmission from the host. The only way to test this is to have a large population where most do not wear masks or most do wear masks. You will not find enough volunteer to make such a test possible. Individual mask wearing does not test this hypothesis.