The Chinese laboratory accused by top American officials of being the source of the coronavirus pandemic conducts research on the world's most dangerous diseases.
US President Donald Trump and Secretary of State Mike Pompeo have both claimed that there is evidence the pathogen came from the lab in Wuhan -- the city where the disease was first detected late last year.
But the World Health Organization said Washington had offered no evidence to support the "speculative" claims, and scientists believe the coronavirus jumped from animals to humans, possibly at a Wuhan market selling wild animals.
The top US epidemiologist Anthony Fauci has echoed the WHO's statement, telling National Geographic that all evidence so far "strongly indicates" a