UC San Diego researchers compiled several global studies that looked into how the coronavirus spreads and found that masks can help stop the spread of many aerosol particles.

Kim Prather, a distinguished professor at the UCSD Scripps Institution of Oceanography, says the science is clear.

"You wear a mask not to protect yourself.

So what kind of facial masks are most efficient.

Prather says that you see the mask moving up and down while breathing, it is a sign that it is working.

"We can get back to a functioning society if we wear masks," Dr.

Prather says that while masks do not block 100% of aerosol particles, it is much better to block some than none