The US government has authorised 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 J&J vaccine is the third authorised in the United States, following ones from Pfizer/BioNTech and Moderna, both of which require two doses.
The US Food and Drug Administration announced the emergency use authorization of the J&J vaccine for adults aged18 and older following Friday's unanimous endorsement by the agency's panel of outside experts.
Shipments to vaccination sites are expected to begin today or tomorrow. President Joe Biden hailed the move but cautioned Americans against celebrating too soon. "Things are