FDA approves new Covid-19 vaccines in US but limits who can get them

Agency authorizes shots for those 65 and older, with young people eligible if they have underlying medical conditions

The US Food and Drug Administration (FDA) has approved updated Covid-19 vaccines but has placed new restrictions on who can get them.

The agency has authorized Covid vaccines for people 65 and older, who are known to be more at risk from serious illnesses from Covid infections.