There must be a local cause in the Province of Hubei that aggravates the sensitivity to the virus. In India and Mexico, sensitivity to H1N1 was aggravated by arsenic in drinking water, even a few parts per million. I do not think there is a relation to race, rather to the staples and the contaminants prevailing in them. Maybe it is not arsenic but something related to fish farms, some chemical or medication used for fish that is reaching the drinking water sources.