Biden administration announces new strategy to tackle Covid subvariant

White House says BA.5 is responsible for majority of new infections in the US amid reports of plan for second booster shots for adults

Joe Biden's administration has announced a new strategy to tackle the highly contagious BA.5 coronavirus subvariant amid reports that the government was developing a plan to make second booster shots available to all US adults.

In a fact sheet published on Tuesday the White House said BA.5, a subvariant of the Omicron coronavirus variant, is already responsible for the majority of new Covid-19 cases in the US.