Oseltamivir is still getting used. Looks productive, at the least to be a prophylactic. They also speculate the woman might have natural immunity from her contact with ducks prior to now. Hemagglutinin inhibition (Hello) assay: The HI assay checks for antibodies to the hemagglutinin of the specific influenza virus using https://www.dailypioneer.com/2017/columnists/droid-takeover.html