A large study of Veterans Affairs (VA) patients in JAMA Internal Medicine shows that, during the 2022 to 2023 season, having COVID-19 was associated with more severe disease outcomes than flu or respiratory syncytial virus (RSV) infection. Differences became less pronounced, however, during the 2023 to 2024 season.
Flu activity remains high in most regions of the U.S. as a winter wave of respiratory illness sweeps across the country. The post-holiday surge in flu cases and hospitalizations is straining many hospitals, leading to overflowing emergency rooms and prompting some facilities to limit patient visitors.
This trend is expected to continue for the several more weeks, the U.S. Centers for Disease Control and Prevention said in its latest FluView weekly surveillance report for the week ending Jan. 11.
"Despite peak or near-peak outbreak duration and size in the winter surge that followed vaccination, the decline in severe outcomes observed upon vaccine introduction endured," the authors wrote.
