The mystery surrounding a top-secret Chinese laboratory at the epicenter of the coronavirus pandemic has been growing in recent days as speculation about what goes on behind its closed doors swirls.
Not a lot is known about the Wuhan Institute of Virology, Chinese Academy of Sciences, but it has been the subject of intense scrutiny. Most recently, it's been accused of not following strict safety protocols. Its dangerous research on bats and coronaviruses have also come into question.