Sure we have. It happened in South Africa. It also rapidly subsided after several weeks. But their vaccination rate is under 25 percent, so that’s probably helping.
“We have not seen spread this fast before from COVID.”
The charts I was referring to, were those posted at the top of this thread - All American.
“South Africa... rapidly subsided after several weeks”
That is the hope here as well, but in South Africa, a big Delta wave had already burned out naturally, so a lot of folks had fresh natural immunity, when their omicron wave hit.