Britain has approved Novavax's two-dose Covid-19 vaccine for use in adults, bringing a fifth coronavirus shot to the country amidst the rapid spread of the Omicron variant that has led to a spike in cases, reports Reuters.

The vaccine, Nuvaxovid, was approved for use in Britons aged 18 years and older as it met the required safety, quality and effectiveness standards, the United Kingdom's Medicines and Healthcare products Regulatory Agency said in a statement.