China is not the whole world, and had to deal with the risk of COVID entering the country from other places. Notably, they did bring COVID numbers down to a ver

China is not the whole world, and had to deal with the risk of COVID entering the country from other places. Notably, they did bring COVID numbers down to a very low level, albeit temporarily. > And even in a fantasy world where you could actually stop all human-to-human contagion, many respiratory viruses have animal reservoirs, making the entire exercise pointless. None of this contradicts GPs claim that it would eliminate a significant chunk of all contagious respiratory illnesses. Quite a few (common) respiratory diseases don't have animal reservoirs and would be effectively eliminated.