That also shapes our immune system's a real multifactorial thing that we can't fully account for just by wearing masks.
Izviwo zvinoumba mashandiro anozoita miviri yedu pakuzvidzivirira kubva kune zvirwere. Iyi inyaya ine mativi mazhinji chose zvatisingagone kungotsanangura nekuti tawana zviputiro zvemachira zvemhino nemiromo kuti tisafeme mhepo ine hutachona.