According to the latest analysis of cases by the Centers for Disease Control and Prevention, the travel ban aimed at stopping the entry of the coronavirus into the United States from China and Europe is too late. The United States restricted travel from China on Feb. 2 and from Europe on March 13, but by March 8, Covid-19 had been circulating in New York City communities, and by March 15, community transmission of the virus had been widespread, the analysis found. The virus that spreads most closely is the best match for strains circulating in Europe, not China. President Donald Trump has repeatedly blamed the virus for not stopping its spread to the United States. According to the report, the importation of the virus and community transmission of the disease had already begun in New York City when the Trump administration imposed travel restrictions on Europe. At the start of the epidemic in New York City, testing was restricted, allowing people with no known cases to transmit the virus. Trump has repeatedly pointed to his travel ban as evidence that his administration has responded effectively to the pandemic, claiming as recently as Tuesday that "we've saved millions of people, and potentially millions of lives." The new study examined data collected by the New York Department of Health and Mental Hygiene on March 1, 20, the beginning of the pandemic in the United States. The department announced on March 8 that the community continues to spread the word. The department examined specimens taken from emergency room patients with flu-like symptoms. Of the 544 samples tested, 36, or 6.6%, were positive for novel coronavirus. With additional genetic sequencing of the samples, the strain of the disease looked more like a strain circulating in Europe than in China. That means the new coronavirus most likely arrived in New York via travelers from Europe or other parts of the United States, the report said. CNN reported in April that two separate research projects that began earlier this year made the same recommendation, also hinting that the virus may be spreading in cities earlier than people thought. In the United States, there are currently 3,497,000 confirmed cases of the coronavirus, which has claimed 137,000 American lives, according to Johns Hopkins University.