No Data to Recommend ‘Preferential’ Omicron Booster Jabs: WHO Panel

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.
The Strategic Advisory Group of Experts on Immunization (SAGE) said in a statement that it reviewed the “safety and immunogenicity” of bivalent vaccines when given as a booster in adults compared to the results of a clinical trial from another kind of vaccine….