Probably true. But we saw a drastic drop in cases and deaths in the summer of 2020 as well. Came back with a vengeance by the winter. Of all places NY should have a strong herd immunity given the population density and wide spread of the virus early on. But still having problems.
Hopefully a combination of factors will kill this off soon. Spanish flu had at least 3 waves over 3 years but there were no vaccines and poor treatments 100 years ago.
No vaccinations really until January and the steep drop off began early January. 133 million vaccines administered, probably 25% immune, another 50 plus million cases even though only 30 million reported. We are probably over 50% now closing in on 60% and need only 70 for herd immunity, real close.