COVID-19 time series

Media attention has focused on recent downturns in COVID-19’s breakthrough cases in hopes that the nation can reach a continuing and tolerable endemic status. Others have warned about a potential 4th wave in conjunction with increased cold weather exposures. A New York Times commentary claimed to have discovered 2-month cycles in the U.S. and globally and concludes “the worst of the pandemic is almost certainly behind us” [1].  What’s going on here? What does the future portend, given what we’ve endured thus far?