The U.S. government on Feb. 27 authorized Johnson & Johnson’s single-dose Covid-19 vaccine, enabling millions more Americans to be vaccinated in the coming weeks and setting the vaccine up for additional approvals around the world.

The European Commission approved Aimmune Therapeutics Inc.’s Palforzia for the treatment of peanut allergy.

The U.S. Centers for Disease Control and Prevention’s (CDC) Advisory Committee on Immunization Practices voted to recommend the use of Moderna Inc.’s Covid-19 vaccine on people 18 years of age and older.