Still, the shortage of testing does not seem to be the only reason that cases have not surged in the U.S. Trends in Covid hospitalizations typically lag case trends by only about a week. And hospitalizations have continued to fall in the U.S., to their lowest level in more than two years. Just waitEven if high levels of immunity have kept cases from rising so far, the effect may not be permanent. While many of those 55 percent may have had an earlier version of Covid, immunity can wane over time. Another mysteryThroughout the pandemic, Osterholm — the Minnesota epidemiologist — has lamented that many scientists, journalists and laypeople exaggerate how much we actually know about Covid.

Source: New York Times April 06, 2022 10:46 UTC