To the editor: The new leaders at the U.S. Food and Drug Administration and Department of Health and Human Services say COVID-19 vaccines will require additional testing before being approved for ...

A child receives a COVID-19 vaccine from nurse Breiona Lang, left, at a Kaiser Permanente clinic in Venice. (Carlin Stiehl / For The Times) To the editor: As a survivor of polio 75 years ago, having ...