There isn’t enough data to recommend COVID-19 booster jabs for Omicron subvariants over the original virus, the World Health Organization’s (WHO’s) panel of vaccine experts said on Tuesday.
Four variant-containing mRNA vaccines that either include bivalent Omicron subvariants BA.1 or BA.4–5 in combination with the “ancestral virus” have been authorized for use as booster doses.
