Oseltamivir remains being used. Appears effective, at least to be a prophylactic. In addition they speculate the woman might have normal immunity from her contact with ducks up to now. Interactions in between human beings and wildlife in Congo increase the chance of the pathogen spilling more than from animals, https://www.dailypioneer.com/2021/state-editions/village-ponds-to--be-named-after--meritorious-girls.html