[cf9]

leak till US has a,b,c in 2020 jan, China has only b. Italy, france has a in the sewages early 2019. CHina should have in 2018. Without restrictions then .Shouldn't China be as worse as US now? 1 year no lock down? US Navy in open sea already has it. Some more different ships. How they get it.
Never talk about science and logic. Inactivated by default must ensure no you don't infected before.

Mrna does not care if the covid is there. just build up the antibodies. Actually if you have, Logically Mrna is better. Just it do the job immediately , better as cure than vaccine(to prevent).