The U.S. just saw a record 45,557 new coronavirus cases in a single day

The U.S. saw a record number of new coronavirus cases in a single day, with 45,557 diagnoses reported Wednesday, according to a tally by NBC News. Wednesday's cases top the previous highest daily count from April 26 — during the first peak of the pandemic in the U.S. — by more than 9,000 cases, according to NBC News' tracking data.