For the Record

Coronavirus science: In the March 23 Section A, an article about how the coronavirus spreads said infectious levels of the virus did not remain on cardboard for 24 hours or on copper surfaces for four hours. Researchers reported that infectious levels of virus did not survive for more than 24 hours on cardboard or for more than four hours on copper.

“The Walking Dead”: In the March 23 Calendar, an article about “The Walking Dead” star Danai Gurira misspelled executive producer Angela Kang’s name as Andrea Yang.

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