Most of the country began social distancing to various degrees at the same time, the second week of March, which is when all the sporting events started to get canceled. Now, they've taken that to various lengths, but New York and New Jersey already had so many infections floating around that they were already primed to explode no matter what anyone did. Remember, the testing is about two weeks behind, and New York City has so many people that their R0 was going to be higher. Those still well behind that are going to see the results of that distancing and have slower rates of infection.