EditorialA closed playground at Lincoln Park in Los Angeles, to slow the spread of the coronavirus, on July 3, 2020. (Kendrick Brinson/The New York Times)
EditorialA book by Edward Jenner, known as the father if immunology, on Jan. 22, 2019, in the London offices of the Vaccine Confidence Project, the group founded by Dr. Heidi Larson to monitor social media for anti-vaccine rumors that emerge around the world. (Edu Bayer/The New York Times)