News Booster shots could be available to all adults by weekend; Pfizer seeks OK for promising antiviral pill: COVID Updates November 16, 2021November 16, 2021Jorge L. Ortiz and Christine Fernando, USA TODAYComments Off on Booster shots could be available to all adults by weekend; Pfizer seeks OK for promising antiviral pill: COVID Updates A panel that advises the CDC has scheduled an emergency meeting Friday to discuss allowing extra vaccine doses for all adults. COVID-19 updates.