Pfizer, Moderna booster shots planned for September; more data needed for J&J vaccine: Latest COVID-19 updates
Elinor Aspegren, USA TODAYComments Off on Pfizer, Moderna booster shots planned for September; more data needed for J&J vaccine: Latest COVID-19 updates
The delta variant accounts for more than 98.8% of American cases, according to the Centers for Disease Control and Prevention. Latest COVID updates.