5 ms·
Cloth masks are not very effective against spreading of covid19, but they are effective against spreading of swine flu. Covid19 and swine flu both hit hard immu
by oneshtein 2y ago
Cloth masks are not very effective against spreading of covid19, but they are effective against spreading of swine flu. Covid19 and swine flu both hit hard immune system for first time, so mortality rate jumps from 1.1% + 0.1% to 5.4%, or about 5x.