美国流行病学专家：美国新冠病毒流行时间早于官方报告时间！

According to research results recently published by the National Institutes of Health, the new coronavirus has spread in the United States in December 2019. Dennis Carroll, chairman of the Global Virology Project and former director of the Global Viruses and Potential Threats Department of the United States Agency for International Development, said in an exclusive interview with a CCTV reporter that the results of this study are credible. He hopes that the United States can cooperate with China to strive for an early date. End this epidemic on a global scale.