The Chinese example didn't change overnight, the information available about predicted outcomes of different policy approaches in the US and UK did, and that's what drove policy change, including the Trump Administration flipping from claiming it was a hoax cooked up by political opponents to treating it as a serious issue.
No, they aren't US policy of suppression was an abrupt policy turn that came with this report: https://www.imperial.ac.uk/news/196234/covid19-imperial-rese...
The Chinese example didn't change overnight, the information available about predicted outcomes of different policy approaches in the US and UK did, and that's what drove policy change, including the Trump Administration flipping from claiming it was a hoax cooked up by political opponents to treating it as a serious issue.