The first human cases of COVID-19 were reported in the central Chinese city of Wuhan in December 2019. China has repeatedly dismissed theories that the virus leaked from one of its laboratories and has said no more visits are needed.
A WHO-led team spent four weeks in and around Wuhan earlier this year with Chinese scientists, and said in a joint report in March that the virus had probably been transmitted from bats to humans through another animal but further research was needed.
WHO director-general Tedros Adhanom Ghebreyesus has said that the investigation was hampered by a dearth of raw data pertaining to the first days of the outbreak's spread and has called for lab audits.
The WHO on Wednesday (October 13) named the 26 proposed members of its Scientific Advisory Group on the Origins of Novel Pathogens (SAGO). They include Marion Koopmans, Thea Fischer, Hung Nguyen and Chinese animal health expert Yang Yungui, who took part in the joint investigation in Wuhan.
Mike Ryan, WHO's top emergency expert, said the new panel may be the last chance to establish the origin of SARS-CoV-2, "a virus that has stopped our whole world."
Maria van Kerkhove, WHO technical lead on COVID-19, voiced hope that there would be further WHO-led international missions to China which would engage the country's cooperation.