Experts warn that a new Covid version known as “Stratus” may lead to a surge in new infections after it has risen to prominence in the UK.

Because of changes that enable it to elude the immune system, Stratus—scientifically known as XFG—is believed to be more contagious than earlier Covid strains.

According to data from the UK Health Security Agency (UKHSA), Stratus is now the most common strain of COVID-19 in England. Continues…