![]() The other group of pathogens traveled aerosols, minute respiratory particles that people produce when they talk and breath. ![]() Doctors, nurses, and other clinicians were advised to wear facemasks to block the droplets. There were viruses like influenza and mumps that were spread by relatively large droplets produced by coughing and sneezing that fell to the ground relatively quickly. For year, experts viewed contagious respiratory pathogens in a binary way.
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