I have two minds on this.
It is weaponized to eliminate those of the enemy that might resist an invasion while the chicoms would theoretically be vaccinated.
It is weaponized to lower the population of all males. China has a lot of extra males of fighting age so she would still have enough to prosecute a war...
I thought it was the females that they didn’t want. Not sure where I got that idea.
It is strange that males seem to have been effected most at the start..but perhaps there is a cultural aspect. Men out more while women stay home. Although, I see plenty of women on the street.