With population pressures putting all humanity at peril, we took upon ourselves to create a solution. In a sense our virus was intelligent. It would attack only those with certain genetic traits.
Our goal was to reduce humanity's numbers to a sustainable level of about four billion. Since the white race is responsible for civilization's advancements we designed our bug to attack those with dark skin pigmentation.
History has shown that great discoveries are often made simultaneously in different places. Still, we never imagined that those clever Chinese would created a virus that only spared those with epicanthic eye folds.