Moderna seeks U.S. authorization of COVID-19 booster shots for all adults

Moderna Inc said on Wednesday it had applied with the U.S. Food and Drug Administration for authorization of its COVID-19 booster vaccine for all adults aged 18 and older. The FDA has cleared booster shots of COVID-19 vaccines for people who are immunocompromised, those aged 65 and older and for individuals at high risk of severe disease or who are regularly exposed to the virus. Moderna is seeking authorization for a 50-microgram booster dose, half the strength of its original vaccine given in two shots about four weeks apart.