Wearing mask is the most effective way to stop person-to-person spread of COVID-19. There was a team of researchers in Texas and California that compared the Covid-19 infection rate trends in Italy and New York before and after wearing face masks were made compulsory. In both these locations the infection rates flattened following the enforcement of mandatory face mask rule. This study was published in the Proceedings of the National Academy of Sciences
It was revealed by the researchers that wearing of face masks has prevented over 78,000 infections in Italy between April 6 and May 9 and over 66,000 infections in New York City between April 17 and May 9.
They wrote, “Wearing of face masks in public corresponds to the most effective means to prevent interhuman transmission, and this inexpensive practice, in conjunction with simultaneous social distancing, quarantine, and contact tracing, represents the most likely fighting opportunity to stop the COVID-19 pandemic, prior to the development of a vaccine.”
The researchers evaluated the effectiveness of various strategies for controlling the spread of coronavirus. Virus can spread via direct contact when a person coughs or sneezes on an object that is then touched by another person or it can spread in the air through large droplers that fall to the ground or/and tiny droplets known as aerosol that can travel and hang in the air for a while.