Winter Viruses
FILE – A sign for flu and covid vaccinations is displayed at a pharmacy store in Palatine, Ill., Wednesday, Sept. 13, 2023. The flu is hanging on in the U.S., intensifying in some areas of the country after weeks of apparent decline., according to data released by the U.S. Centers for Disease Control and Prevention on Friday, Feb. 9, 2024. (AP Photo/Nam Y. Huh, File)