A declassified CIA memo released Wednesday challenges the work intelligence agencies did to conclude that Russia interfered ...

The World Health Organization’s expert group says the origin of COVID-19 remains inconclusive, though most evidence still ...

“CIA assesses with low confidence that a research-related origin of the COVID-19 pandemic is more likely than a natural origin based on the available body of reporting,” a CIA spokesperson ...

China denies lab leak theory of COVID-19 origins amid CIA's low-confidence assessment. Scientists and the public debate continues over the virus's origins and China's transparency.

The CIA “continues to assess that both research-related and natural origin scenarios of the COVID-19 pandemic remain plausible,” the agency wrote in a statement about its new assessment.

China says it's "extremely unlikely" that COVID-19 came from a lab, after the CIA said it believed , though with low confidence, that it did, rather than from natural transmission.