October 7, 2020, 11.07 PM

In the update posted on its website, the agency again acknowledged recent research showing people with Covid-19 infected others who were more than six feet away or shortly after an infected person left an area.

CDC officials called those ”limited, uncommon circumstances”.

In those cases, spread occurred in poorly ventilated and enclosed spaces where people were doing activities that caused heavier breathing, like singing or exercise, CDC officials said.

People can protect themselves by staying at least 6 feet away from others, wearing a mask, washing their hands, cleaning touched surfaces and staying home when sick.

Last month, the top US health agency ignited controversy among experts when it quietly posted an update that seemed to suggest the agency's position had changed, and then within days took it down again.

Read also: AstraZeneca Covid-19 Vaccine Under US Investigation Over Safety

The short-lived post said the virus can remain suspended in the air and drift more than 6 feet, and officials emphasized the importance of indoor ventilation. It also added singing and breathing to the ways the virus can go airborne.

Federal health officials later said the post was a mistake and that it had been released before full editing and clearance was completed.

They said there was no major change in the agency's position, but they would finalize a post to clarify the CDC's thinking. That's what was posted Monday.

A small group of researchers — including Milton — on Monday published a letter in the journal Science that called for clearer public health guidance about how coronavirus spreads in the air.


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