Outpatient study finds masks, respirators equally protective -based on data over four flu seasons - the new findings come in the wake of 2018 research that showed that flu likely also spreads by small aerosol particles, not just by respiratory droplets.

Outpatient study finds masks, respirators equally protective -based on data over four flu seasons - the new findings come in the wake of 2018 research that showed that flu likely also spreads by small aerosol particles, not just by respiratory droplets.: https://ift.tt/32DPaoj Read more... https://ift.tt/2Ih8a42