Surgical masks and N95 respirators are not effective at preventing the flu. Of the 446 nurses who took part in this study, nearly one in four (24%) in the surgical mask group still got the flu as did 23% of those who wore the N95 respirator. Influenza infection occurred in 50 nurses (23.6%) in the surgical mask … Continue reading Surgical Mask vs N95 Respirator for Preventing Influenza Among Health Care Workers – JAMA (2009)