thatis aerosols and that is the part in that is the important part about coronavirus that can filter out the particles that would otherwise get around and get through. this particles that would otherwise get around and get through. around and get through. as far as the research around and get through. as far as the research team around and get through. as far as the research team is around and get through. as far as the research team is concerned, i the research team is concerned, every health care worker who has the potential to come into contact with patients who may have covid or clearly who are dealing with covid patients should be wearing this type of mass. ~ ., ., ., , ., of mass. what we found was for health care of mass. what we found was for health care workers of mass. what we found was for health care workers on - of mass. what we found was for health care workers on red - of mass. what we found was for| health care workers on red covid wards, when we switched