By Denise Grady March 1, 2021, 3:14 p.m. ET Covid-19 vaccinations at the Community Center in Rohnert Park, Calif. Swelling of lymph nodes in the armpit became a recognized side effect in the trials of the Moderna and Pfizer-BioNTech vaccines.Credit…Jim Wilson/The New York Times Coronavirus vaccinations can cause enlarged lymph nodes in the armpit or near the...
