The U.S. Centers for Disease Control and Prevention has revised its guidelines on how the new coronavirus spreads, saying tiny particles that linger in the air play a role.
The agency, after saying for months that the new coronavirus is primarily transmitted through close contact from person to person, updated its website Friday to add transmission by the tiny particles known as aerosols.
Covid-19 can be spread through “respiratory droplets or small particles, such as those in aerosols” that are produced when an infected person coughs, sneezes, sings, talks or breathes, the CDC said.
The particles, the CDC added, can be inhaled and cause infection. “This is thought to be the main way the virus spreads,” the CDC said. However, the agency said elsewhere on its website that Covid-19 is mainly spread through close contact.
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The CDC didn’t immediately respond to a request for comment.
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