The U.S. flu season has arrived on schedule after taking a year off, with flu hospitalizations rising and two child deaths reported.

Last year’s flu season was the lowest on record, likely because COVID-19 measures — school closures, distancing, masks and canceled travel — prevented the spread of influenza, or because the coronavirus somehow pushed aside other viruses.

“This is setting itself up to be more of a normal flu season,” said Lynnette Brammer, who tracks flu-like illnesses for the U.S. Centers for Disease Control and Prevention.

The childhood deaths, Brammer said, are “unfortunately what we would expect when flu activity picks up. It’s a sad reminder of how severe flu can be.”