Airborne transmission of SARS-CoV-2

The U.S. Centers for Disease Control and Prevention warned yesterday that the coronavirus spreads more readily than it had previously stated, after briefly posting and then removing a draft of the same advisory last month. The new guidance warns that in indoor settings with poor ventilation, contagion can spread via microscopic aerosol particles well beyond the 6-foot social distance many Americans have been observing.

A group of infectious-disease physicians and aerosol experts, in a letter published Monday in the journal Science, more strongly emphasized the airborne potential of the virus than the CDC did in its update.

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CDC says airborne transmission plays a role in coronavirus spread in a long-awaited update after a website error last month

The update officially acknowledges growing evidence that under certain conditions, people farther than six feet apart can become infected by tiny droplets and particles that float in the air for minutes and hours, and that they play a role in the pandemic.