"A man who had returned from Wuhan was hospitalized for the virus in Washington state on January 21, 2020. He was released after two weeks of treatment. A few days later, another case was reported in Chicago, by a woman who had also just returned from Wuhan. A third case was confirmed a day later in Orange County, California."

https://en.wikipedia.org/wiki/Timeline_of_the_COVID-19_pande...