USA – FDA warns that emerging Omicron subvariant could make Evusheld obsolete

AstraZeneca’s Covid-19 pre-exposure prophylactic Evusheld has managed to remain relevant for immunocompromised and other patients when many of its therapeutic peers haven’t with each new Omicron subvariant.

But that win streak may slowly come to a close as the FDA told healthcare providers on Monday that one of the emerging subvariants, BA.4.6, renders Evusheld almost completely useless.

Nationally, BA.4.6 currently makes up about 13% of new cases, compared to just 1% of cases at the beginning of July, according to the CDC. But in some regions, like in Iowa, Missouri, Kansas and Nebraska, the BA.4.6 subvariant makes up more than 20% of all Covid-19 cases…