The 5 well being treatment employees were definitively seronegative versus H5 in all assays, meaning they weren't contaminated with H5. This research shows a trend of weakening binding affinity of present antibodies from H5 isolates after some time, indicating that the H5N1 virus is evolving immune escape of our clinical https://www.dailypioneer.com/2017/columnists/modis-march-to-n-e-continues.html