One of the most highly populated countries is Indonesia. It is the fourth most populous country and has had its own journey through the pandemic.
Their big peak occurred during a predominantly low vaccination roll out. The top of the infection spike occurred at the end of July when the vaccination roll out saw just 7.5% of the population double jabbed.
By the time the new infections dropped away to insignificantly low numbers, they had barely reached 30% fully vaccinated.
Yet highly vaccinated areas are having huge new waves of covid.
These sort of stats would be talked about in the media in a non totalitarian society, remember those old days.