Johnson & Johnson single-shot Covid vaccine approved for use in UK

The UK’s medicines regulator has approved the use of a fourth Covid vaccine, as cases of the variant of concern first detected in India rise.

The jab from US-based pharmaceutical company Johnson & Johnson is considered a key tool in the global arsenal against Covid, given it is a one-dose regimen, unlike the the other three vaccines approved for UK use that require two shots to provide a high level of protection.