Dr Alina Chan, molecular biologist at Harvard and MIT and co-author of Viral: The search for the Origin of Covid-19 outlined five reasons why the pandemic likely stemmed from a lab accident in China.Dr Alina Chan, molecular biologist at Harvard and MIT and co-author of Viral: The search for the Origin of Covid-19 outlined five reasons why the pandemic likely stemmed from a lab accident in China.Read MoreHealth News | Mail Online