"...had New York imposed its extreme social distancing measures a week or two earlier, the death toll might have been cut by half or more."

Two Coasts. One Virus. How New York Suffered Nearly 10 Times the Number of Deaths as California.

https://www.propublica.org/article/two-coasts-one-virus-how-new-york-suffered-nearly-10-times-the-number-of-deaths-as-california