Coronavirus: US FDA clears Moderna and J&J boosters, backs ‘mix-and-match’ strategy
- The decision paves the way for millions more to get extra protection, with the Delta variant causing breakthrough infections in some who are fully vaccinated
- The agency previously authorised Pfizer boosters for people aged 65 and older, as well as those at higher risk

The decision paves the way for millions more people in the United States to get the additional protection with the highly contagious Delta variant of the virus causing breakthrough infections among some who are fully vaccinated.
Last week, an advisory panel to the FDA voted to recommend a third round of shots of the Moderna vaccine for the same groups. The panel also recommended a second shot of the J&J vaccine for all recipients of the one-dose inoculation at least two months after receiving their first.

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The FDA and US Centres for Disease Control and Prevention (CDC) were under some pressure to authorise the additional shots after the White House announced plans in August for a widespread booster campaign.