"According to an analysis report released by the US Centers for Diseases 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. This finding is important because they It is based on a sample of the new coronavirus SARS-CoV-2, which was collected from patients in five hospitals in the city. These patients were deliberately selected because these patients are “self-identified Chinese”. Utilization rate "speakers". The results of the CDC analysis are similar to a study published in Science in June, which found that the virus samples collected from 84 patients in New York City between March 9 and March 14 can be traced to cases in Europe and other regions 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.