Data Report

Mutations driving bird flu vaccine escape identified

Haemagglutinin residues shape antigenic diversity in H5 avian influenza viruses and influence vaccine effectiveness.

May 5, 2026

While vaccination remains a key strategy for controlling avian influenza in poultry and reducing the risk of zoonotic transmission to humans, the virus evolves rapidly, often leading to mismatches between vaccine strains and circulating field viruses. These differences can weaken vaccine protection and enable the virus to escape immune responses.

LINK:
https://www.feedstuffs.com/poultry/mutations-driving-bird-flu-vaccine-escape-identified