The five overall health care workers were definitively seronegative against H5 in all assays, which implies they weren't infected with H5. This research shows a development of weakening binding affinity of present antibodies from H5 isolates after some time, indicating the H5N1 virus is evolving immune escape of our health-related https://www.dailypioneer.com/2014/state-editions/locals-block-highway-demand-quick-action.html