1 / 7A Chinese scientist who vanished after she was dubbed 'the world's first Covid patient' is still missing despite a year-long manhunt amid fears of a state cover-up.2 / 7Huang Yanling was named as Patient Zero in early online reports shared widely throughout China last February, when the magnitude of the deadly virus was first coming to light.3 / 7The researcher, who worked at the Wuhan Institute of Virology is thought to have been the first to contract Covid in autumn 2019, before it was officially acknowledged.4 / 7The claims suggested a link between the pandemic and the institute - which houses zoonotic bat diseases - and sparked fears the bug had been accidentally leaked during experiments. State officials and lab agents were quick to rubbish the reports at the time and remove them from the internet.5 / 7They claimed Huang was safe and had simply moved jobs, with a Chinese news agency even claiming to have spoken her new employer.6 / 7But China is yet to produce the scientist physically despite numerous requests from the US State Department to stop hiding information. Their reluctance has fuelled the theory she is either dead or being held by the state to cover up the institute’s role in the pandemic, reports the Mail on Sunday.7 / 7The country is now under mounting pressure to reveal conclusive evidence of Huang's whereabouts and the true origins of the pandemic.