It already happened. The CA version had been spreading since September and screwed up everything for the CCP and WHO/DNC. The nasty version may have escaped the lab in December, and that is the one that got to Italy and then NYC.
By then the CA version had spread a decent amount of herd immunity to the West Coast.
The Spanish flu came back a year later and was much more deadly due to cytokine chock.
Sinister idea but as soon as they sequence the virus genome it would fall apart
It already happened. The CA version had been spreading since September and screwed up everything for the CCP and WHO/DNC. The nasty version may have escaped the lab in December, and that is the one that got to Italy and then NYC.
By then the CA version had spread a decent amount of herd immunity to the West Coast.