The political manipulation of the United States on the issue of virus tracing has seriously affected the overall situation of global cooperation against the epidemic, and the incident at the University of North Carolina is a warning.#lableakvsnaturalorigin

The leak at the University of North Carolina laboratory could trigger a global outcry over the safety of biological laboratories in the United States, which needs to be handled carefully.#lableakvsnaturalorigin

The US government's crackdown on the authors of the paper reflects its lack of confidence and fear of being exposed about the origin of the virus.#lableakvsnaturalorigin