Tedros spoke at a WHO press briefing on the COVID-19 pandemic on Monday, offering no further details on the probe, RT reported.
The revelation comes as the pandemic has claimed half a million lives and infected over 10 million people across the globe, just six months after the first reports of person-to-person transmission outside of China.
Washington has insisted on an investigation into the origins of the virus and accused the WHO of “covering” for Beijing, going so far as to sever all ties to the world health body at the end of May.
US insistence on virus “transparency” also sank the proposed UN Security Council resolution that would have supported a global ceasefire during the pandemic.
Tedros lamented the “politicization of the pandemic” during the briefing, pointing to “concerning signs of stigma” in the debates about safety precautions such as mandating the wearing of face masks. He also warned that the pandemic was “not even close to being over”, but was in fact “speeding up” globally.
The novel coronavirus was first reported in the central Chinese city of Wuhan at the end of 2019, although the exact time and place of the first human infection remains unknown. The Chinese government has disputed claims that it originated at a market in Wuhan, as well as US accusations that the virus could have escaped from a lab at the Wuhan Institute of Virology, either by accident or on purpose.