A sneeze in progress, revealing the plume of salivary droplets as they are expelled from this man's mouth.

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Illnesses like the flu (influenza) and colds are caused by viruses that infect the nose, throat, and lungs. The flu and colds usually spread from person to person when an infected person coughs or sneezes.

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Photo credit: © The Syndicate / Alamy / Afripics
License: Licensed
Model Released: No

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