The problem for the lab-leak position is that the U.S. has never had access to the Wuhan lab and has thus been unable to reach a definitive answer for more than five years. Now that the CIA has at last come to a conclusion, not all scientists are sold on what it has reported, seeing the results as thinly scientifically sourced.

The CIA now believes the virus responsible for the COVID-19 pandemic most likely originated from a laboratory.

The Central Intelligence Agency previously said that two explanations were plausible, a lab leak or a natural source for the virus. Yet under new agency director John Ratcliffe, the CIA has changed its view, which is now in line with that of the Department of Energy and the Federal Bureau of Investigation.