The US Army Medical Research Institute of Infectious Diseases at Fort Detrick Photo: AP

The Chinese Embassy in US said in a statement that China supports a comprehensive study of all early cases of COVID-19 found worldwide and a thorough investigation into some secret bases and biological labs all over the world, after US President Joe Biden ordered intelligence to "redouble" their work to determine origins of coronavirus.

Such a study and investigation should be full, transparent and evidence-based, and make everything clear, the Chinese embassy said.

Some Western media have once again hyped the hypothesis the lab-leak conspiracies. Biden issued a statement Wednesday, saying "I have now asked the Intelligence Community to redouble their efforts to collect and analyze information that could bring us closer to a definitive conclusion, and to report back to me in 90 days." 

Biden also asked US national laboratories and other government agencies to assist the intelligence agencies. The president said that the US will continue to work with like-minded partners around the world to urge China to participate in the international investigation and provide all relevant data and evidence.

Since the outbreak of COVID-19 in 2020, some political forces have been fixated on political manipulation and blame games, and recently, such smear campaigns and blame shifting have been coming back, and the "lab leak" conspiracy theory is resurfacing, the embassy said.

However, politicizing origin tracing, which is a matter for science, will not only make it hard to find the origin, but also give free rein to the "political virus" and seriously hamper international cooperation on the pandemic, said the embassy.