The coronavirus that causes Covid19 is quite selective. It is quite mild in children and young people, and most of those who died from it or complications from it, are older people.
The virus originated in China.
China's one-child policy has resulted in an ageing population. And this top-heavy population pyramid will mean that each working adult will have to support many elderly.
China's "social support" system will not be able to support an ageing China.
If only there were some way to... reduce the burden from an ageing population...