FILE - Jackson-Hinds Comprehensive Health Center nurse Maggie Bass, right, gives a COVID-19 vaccine to an unidentified person, Sept. 21, 2021, in Jackson, Miss. COVID-19 vaccines get updated each fall to match newer strains of the virus and government advisers on Wednesday, June 5, 2024, are urging that Americans' next shot target a strain called JN.1. (AP Photo/Rogelio V. Solis, File)