An informed guide to the pandemic, with the latest developments and expert advice about prevention and treatment.
- U.S. coronavirus cases are spreading at an alarming rate, particularly in the Northeast and the Midwest.
- As New York City approaches the high alert level for the virus, the city recommends but doesn’t mandate masks.
- The F.D.A. is expected as early as Tuesday to authorize a booster shot of the Pfizer-BioNTech vaccine for children 5 to 11.
- Find the latest updates here, as well as maps and a vaccine tracker.