Huge, gold-standard study shows unequivocally that surgical masks work to reduce coronavirus spread


Results from a massive study in Bangladesh unequivocally show that surgical masks reduce the spread of SARS-CoV-2, scientists say. 

The results — from the highest-quality, gold-standard type of clinical trial, known as a randomized controlled trial — should “end any scientific debate” on whether masks are effective in battling the spread of COVID-19, Jason Abaluck, an economist at Yale and one of the authors who helped lead the study, told The Washington Post.