Shi Zhengli is one of the world's authorities on coronavirus - and how it orginated before being passed onto humans. The catastrophic chain of events, which started in China in December, has ended in a world wide pandemic with hundreds of thousands dead and billions of people now in lockdown.
Virologist Shi is the woman credited with unlocking Covid-19's genetic code within days after the outbreak first seemed to come to the public's attention.
Her work has now been passed to scientists around the world where experts are working day and night to develop both a cure and vaccine for the deadly bug.
But for seven days, China withheld this information from the rest of the world as the pandemic spread like wildfire. Shi was 'muzzled' from