The World Health Organization (WHO) needs to visit other countries and regions as well for tracing the origin of the novel coronavirus, said Chinese Foreign Ministry spokesperson Wang Wenbin on Wednesday.
"We hope all related countries can collaborate actively with WHO like what China did," he added.
Two WHO experts arrived in China in mid-July and conducted scientific cooperation on virus tracing. Multiple video conferences were held during their quarantine. They discussed topics including virus tracing and route of transmission with Chinese experts.