The WHO-backed study found that face masks and eye protection really do prevent spread of COVID-19.
Source: https://www.livescience.com/face-masks-eye-protection-covid-19-prevention.html
Only the Autodidact is Free
The WHO-backed study found that face masks and eye protection really do prevent spread of COVID-19.
Source: https://www.livescience.com/face-masks-eye-protection-covid-19-prevention.html