It was doing very well along with the tristate area.I don’t mean this to be flippant, but I thought NyC was doing well?
Until phase 3.
Once larger social gatherings were allowed, people did so without social distancing and masks. They thought it was fine "to go back to normal." Then there were the beach parties, and weddings, and funerals, and house parties that, again, were too many people with lax precautions that became super spreader events.
Then schools restarted, and it's clear that children can be a vector of transmission, the older the more contagious. And colleges became super spreaders.
Up until phase 3, everyone was super careful. When the word went out that restaurants and bars could open and people could sit indoors with no masks because they're eating... people stopped being careful.
The same lack of carelessness the rest of the country had been practicing all along because they thought that with suburban and rural communities being so spread out... they were safe. All along forgetting just how much we humans socialize with mixed groupings of people on a regular basis.