A nurse administers a Moderna COVID-19 booster vaccine at an inoculation station next to Jackson State University in Jackson, Miss., Friday, Nov. 18, 2022. U.S. regulators on Tuesday, April 18, 2023, cleared another COVID-19 booster dose for older adults and people with weak immune systems so they can shore up protection this spring — while taking steps to make coronavirus vaccinations simpler for everyone else.(AP Photo/Rogelio V. Solis)
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