A top US health official say the US needs 300 million face masks for healthcare workers. But masks are not necessarily effective against coronavirus.

11:18pm PST - February 25th, 2020    n95 mask - Business Insider

Health and Human Services Sec. Alex Azar said the US needs at least 300 million face masks for health officials as the country braces the rapid spread of the coronavirus. The HHS secretary said the US already has 30 million, but would need 270 million more. T…