O n May 20, the federal government announced a major shift in how it plans to review and recommend COVID-19 vaccines for Americans. Among the changes: when manufacturers want to update the vaccine each year to target the latest variants, they will be required to conduct additional studies to show the effectiveness of the vaccine in people who are not at high risk of severe COVID-19. Since 2023, federal health officials have recommended an annual COVID-19 shot for most people, and vaccine makers

Tag-uri: Coronavirus