CDC says coronavirus can spread indoors in updated guidance

NEW YORK (AP) — The top U.S. public health agency said Monday that the coronavirus can spread more than 6 feet through the air, especially in poorly ventilated and enclosed spaces. But agency officials maintained that such spread is uncommon and current social distancing guidelines still make sense.

However, several experts faulted the updated Centers for Disease Control and Prevention guidance. They said the virus can spread more easily than the CDC seems to be indicating, and suggested that the public should wear masks even in prolonged outdoor gatherings when they are more than 6 feet apart.

The virus “is traveling through the air and there is no bright line. You’re not safe beyond 6 feet. You can’t take your mask off at 6 feet,” said Dr. Donald Milton of the University of Maryland School of Public Health.

For months, the CDC has said that the virus spreads mainly through small airborne droplets when an infected person coughs or sneezes. Most CDC guidance about social distancing is built around that idea, saying that 6 feet is a safe buffer between people who are not wearing masks.

In interviews, CDC officials have also acknowledged growing evidence that the virus can sometimes spread on even smaller particles called aerosols that spread over a wider area.

In the update posted on its website, the agency again acknowledged recent research showing people with COVID-19 infected others who were more than 6 feet away or shortly after an infected person left an area. CDC officials called those ”limited, uncommon circumstances.”

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