Maybe it is a manufactured virus from a biolab? Maybe it was part of China’s plan to take over countries by targeting their military members who are mostly male. Pure speculation on my part but who knows what this is exactly?
A less charitable person than I might speculate that the plan was to eliminate the males in surrounding countries to free up the wimmin folk to replace all the Chinese girls who were aborted under the one child policy.
Sort of a penis mightier than the sword policy...