Can we get that data from China's experience after dropping the zero-COVID policy in Dec 2022? If I understand correctly, at that time, only a tiny slice of th

Can we get that data from China's experience after dropping the zero-COVID policy in Dec 2022? If I understand correctly, at that time, only a tiny slice of the population had been exposed to previous COVID variants, and something like 80% has since gotten it. It looks like the vaccination rate was something like 90% at the time, but that should still be a pretty large naive population to look at, of people who were exposed to Omicron & later with no original/Delta exposure.