Sars-CoV-2 global attacks have come in regular four monthly waves in 2021. Will the next wave trough, or CovidMinimum, be on or around 23rd October 2021, with about 5.18 million biweekly infections? Place your bets!
We think that the first wave shown above, from October 2020 to February 2021, had a collapsed peak caused by a lack of reporting over the Thanksgiving, Christmas & winter holidays. The wave was probably at least as big, if not bigger, than the second wave from February to June 2021.
The winter peak for Covid cases in 2020/2021 would probably have looked something like this if case recording hadn’t been interrupted by the winter holidays:
Have a go yourself with the interactive chart below! The button is pretty cool. To update it, press the date in the bottom right corner of the chart.