Zhou Lei, a researcher at the Chinese Center for Disease Control and Prevention, said in Beijing on the 8th that when carrying out the first phase of the joint traceability study of the new crown virus, China has always been in a scientific attitude. She said that the Chinese side shared all the early cases that could be collected in Wuhan, including information on possible infections and suspected infections.

"I believe that in the future, we will continue to work closely with WHO, international counterparts, and scientists who have always adhered to ascientific attitude," she said.