Internal CDC document outlines how the Delta variant has upended COVID-19 messaging

People wearing masks in New York City.
(Image credit: Angela Weiss/AFP via Getty Images)

An internal Centers for Disease Control and Prevention document obtained by The Washington Post states that the Delta variant of the coronavirus appears to cause more serious infections and is as contagious as chickenpox.

The CDC reached this conclusion after looking at new, unpublished data from outside studies and outbreak investigations, the Post reports. The research also suggests that people who are vaccinated against the coronavirus but become infected by the Delta variant are able to transmit the virus just as easily as people who are not vaccinated, and it's estimated that every week, there are 35,000 symptomatic infections among the 162 million Americans who are vaccinated.

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Catherine Garcia, The Week US

Catherine Garcia has worked as a senior writer at The Week since 2014. Her writing and reporting have appeared in Entertainment Weekly, The New York Times, Wirecutter, NBC News and "The Book of Jezebel," among others. She's a graduate of the University of Redlands and the Columbia University Graduate School of Journalism.