According to an analysis report released by the Centers for Diseases in the United States on Thursday, as many as 75% of the coronavirus strains circulating in New York City in early March are genetically similar to those in other parts of Europe and North America. Control and prevention. The findings are important because they are based on samples from the new coronavirus SARS-CoV-2, which were collected from patients in five hospitals in the city. These patients were deliberately selected because these patients are "self The “high usage rate” spokesperson of the “identified Chinese”. The results of the CDC analysis are similar to a study published in Science in June, which found that 84 people from New York City between March 9 and March 14 The virus samples collected by this patient can be traced back to cases in Europe and other regions in the United States.
According to the authors, a similar analysis was also published in Science in June and found that at least 7 different coronaviruses are circulating in California, indicating that the outbreak of the disease may originate from multiple sources, including overseas travel. And visitors from other states in the United States.