The Wuhan lab at the core of a coronavirus controversy

WUHAN, China: Nestled in the hilly outskirts of the city at the heart of the coronavirus crisis, a Chinese high-security bio-safety laboratory is now the subject of US claims it may be the cradle of the pandemic.

Chinese scientists have said the virus likely jumped from an animal to humans in a market that sold wildlife in Wuhan, but the existence of the lab has fuelled conspiracy theories that the germ spread from the facility.

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READ: China lab says conspiracy theories hurting efforts to curb COVID-19

The United States has now brought the allegations into the mainstream, with US Secretary of State Mike Pompeo saying officials were doing a "full investigation" into how the virus "got out into the world".

Here are some key questions about the Wuhan Institute of Virology:

WHAT IS IT?

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The institute is home to the China Centre for Virus Culture Collection, the largest virus bank in Asia which preserves more than 1,500 strains, according to its website.

The complex contains Asia's first maximum security lab equipped to handle Class 4 pathogens (P4) – dangerous viruses that pose a high risk of person-to-person transmission, such as Ebola.

The 300 million yuan (US$42 million) lab was completed in 2015, and finally opened in 2018, with the founder of a French bio-industrial firm, Alain Merieux, acting as a consultant in its construction.

The institute also has a P3 laboratory that has been in operation since 2012.

The 3,000-square-metre P4 lab, located in a square building with a cylindrical annex, lies near a pond at the foot of a forested hill in Wuhan's remote outskirts.

On a recent visit AFP saw no sign of activity inside.

A poster outside the complex read, "Strong Prevention and Control, Don't Panic, Listen to Official Announcements, Believe in Science, Don't Spread Rumours".

READ: Commentary: Snakes possible source of Wuhan virus but more research needed

IS IT THE SOURCE OF THE CORONAVIRUS?

The Washington Post and Fox News both quoted anonymous sources who voiced concern that the virus may have come – accidentally – from the facility.

US diplomatic cables seen by The Washington Post revealed that officials were especially concerned about inadequate safety standards over researchers' handling of SARS-like bat coronaviruses in the high-security lab.

Fox News said the pandemic's "patient zero" may have been infected by a strain of bat virus being studied at the facility and gone into the population in Wuhan.

President Donald Trump, asked about the lab theory, said that "more and more, we're hearing the story" and that the United States was "doing a very thorough investigation".

Various conspiracy theories about the alleged origin of the coronavirus in the lab have flourished online.

The institute declined to comment on Friday but it released a statement in February dismissing the rumours.

READ: Trump says US investigating if COVID-19 came from Wuhan lab

It said it received samples of the then-unknown virus on Dec 30, determined the viral genome sequence on Jan 2 and submitted information on the pathogen to the World Health Organization on Jan 11.

Chinese foreign ministry spokesman Zhao Lijian on Friday rejected allegations that the lab was responsible for the outbreak.

"A discerning person will understand at a glance that the purpose is to create confusion, divert public attention, and shirk their responsibility," said Zhao, who himself promoted conspiracy theories the US army may have brought the virus to China.

WHAT DO SCIENTISTS KNOW ABOUT THE VIRUS?

Scientists believe the virus originated in bats before being passed to humans through an intermediary species – possibly the endangered pangolin, whose scales are illegally trafficked in China for traditional medicine.

But a study by a grouRead More – Source