Yeah, people that sat 15 feet from him contracted the virus, a person that sat at the front of the bus after he got off, no where near where he was sitting became infected. And some experts are saying face mask will not help—yeah, right.

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Hu said the patient, who was not wearing a mask, was likely to have inhaled aerosols, or tiny particles, breathed out by the infected passengers from the previous group.

Aerosols are light-weighted particles that are formed from tiny droplets of bodily fluids.

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They said the study proves the importance of washing hands and wearing face masks in public places because the virus can linger in the air attached to fine droplet particles.

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