Prevalence in United states
In United states, The first confirmed case of infection reported on 20 January 2020. The patient returned from a visit to Wuhan, China but he reported that he had not spent any time at the Huanan seafood market, and no known contact with ill person during his visit [27].
On 31 January 2020 The United states declared public health emergency to respond to the new epidemic. After that, on 4 February 2020, 11 cases of COVID-19 had been reported [28].
On 26 February 2020, 12 travel-related cases had been diagnosed, three cases with no travel history and 46 cases among repatriated citizens[29].
There were no death in USA as of the end of February 2020 [30].
On 14 March 2020, the number of total confirmed cases was 1678 and 41 deaths in total [31]. These numbers still stable until 17 March when there were 1825 new cases and more than 15 new deaths [32]. According to WHO reports, the incidence and mortality rate severely increased exceeding numbers in China.
At least 13 states have reported more than 100,000 coronavirus infections and four of them – California, Florida, Texas and New York – have recorded more than 400,000.California, with more than 516,000 positive cases, has reported the most infections in the nation. The statistics from Jan 20 to 4 August 2020 show a total of 4,629,459 confirmed cases of COVID-19 with 154,226 deaths. [33]