Why "prolonged" personal contact? Does the virus "wait" for an opportune time to jump to the other person? Is it shy? Needs to warm up to the person for a prolonged period? These people are idiots…
Cold be a brilliant strategy-
POTUS: Hammer on China that it was their fault. CHY-NA. JUST CHY-NA. No one else.
China: stop making us look bad. (when they are finally fed up of taking the blame- CHINA leaks that the DS forced the lab to release it.)
POTUS: I dont want to talk to Xi right now. (But when he does talk to him- Xi drops the DS bomb so people stop blaming "just Chy-na.")
POTUS can go to the world with China's proof of complicity by the DS.