I was part of the largest randomized controlled trial to date testing the effectiveness of mask-wearing. What we found provides gold-standard evidence: Wearing masks, particularly surgical masks, prevents COVID-19.
At the root of every pandemic is an encounter between a disease-causing microorganism and a human being … It is a social phenomenon as much as it is a biological one
Most people who catch Covid won't become severely ill and will get better relatively quickly. But some have had long-term problems after recovering from the original infection - even if they weren't very ill in the first place.
