For Black and Latinx participants, watching public health video messages recorded by a diverse set of physicians reduces COVID-19 knowledge gaps, according to a study published online Dec. 21 in the Annals of Internal Medicine. Marcella Alsan, M.D., M.P.H., Ph.D., from the Harvard Kennedy School of Government in Cambridge, Massachusetts, and colleagues conducted a randomized trial in the United States from May 13 to 26, 2020, involving 14,267 self-identified Black or Latinx adults (61.3 and 38.7 percent, respectively).
