Warning over new Covid strain spreading to US after cases surge in China

Covid-19 led to nationwide lockdowns and millions of deaths worldwide (Picture: EPA)

A new and apparently more infectious variant of Covid-19 has been detected in the US after cases surged in China.

The strain called NB.1.8.1 has been found in international travellers at a number of US airports, data from the country’s Centre for Disease Control and Prevention (CDC) shows.

New reports of the strain have now also been picked up separate to the airport cases, indicating it could now be spreading locally.