Face masks cut disease spread in the lab, but have less impact in the community. We need to know why
- Written by Paul Glasziou, Professor of Medicine, Bond University
In controlled laboratory situations, face masks appear to do a good job of reducing the spread of coronavirus (at least in hamsters) and other respiratory viruses. However, evidence shows mask-wearing policies seem to have had much less impact on the community spread of COVID-19.
Why this gap between the effectiveness in the lab and the...





