The 5 wellbeing care staff had been definitively seronegative towards H5 in all assays, which means they weren't contaminated with H5. This review shows a pattern of weakening binding affinity of present antibodies towards H5 isolates over time, indicating which the H5N1 virus is evolving immune escape of our health https://www.dailypioneer.com/2024/india-abroad/india-wants-to-play-a-responsible-role-globally--biden-admin.html