For much of 2020 and 2021, suggesting that SARS-CoV-2 might have originated from a laboratory in Wuhan was grounds for social media censorship and professional ostracism. The theory was labeled a "debunked conspiracy" by major media outlets and fact-checkers. That characterization was never supported by the evidence, and the scientific and intelligence community has since moved dramatically.

In February 2023, the U.S. Department of Energy — which oversees national laboratories with significant biological expertise — assessed with "low confidence" that the pandemic most likely began with a laboratory leak. The FBI, with "moderate confidence," had already reached the same conclusion. While other intelligence agencies leaned toward natural origin or remained undecided, the point is that the lab leak hypothesis was always a legitimate possibility, not a conspiracy theory.

The circumstantial evidence is substantial. The Wuhan Institute of Virology (WIV) is one of the world's leading coronavirus research facilities, located in the city where the pandemic began. The WIV had been conducting gain-of-function research on bat coronaviruses — work partially funded by U.S. grants through EcoHealth Alliance. A 2021 investigation by The Intercept, using documents obtained through FOIA, revealed that EcoHealth Alliance had funded experiments at the WIV that made chimeric coronaviruses more infectious in humanized mice.

Despite extensive searching, no intermediate animal host has been identified — a crucial element of the natural spillover theory. For comparison, the intermediate hosts for SARS-1 (civet cats) and MERS (camels) were identified within months. Three WIV researchers were reportedly hospitalized with COVID-like symptoms in November 2019, according to a U.S. intelligence report — weeks before China officially acknowledged the outbreak.

The early suppression of the lab leak theory was itself a scandal. A 2021 investigation revealed that the influential February 2020 letter in The Lancet, organized by EcoHealth Alliance president Peter Daszak — who had direct financial ties to the WIV — was designed to pre-emptively discredit the lab leak hypothesis. Daszak did not disclose his conflict of interest. Scientists who privately harbored doubts about natural origin admitted they stayed silent due to fear of being associated with President Trump, who had publicly endorsed the theory.

This episode should serve as a cautionary tale: when scientific inquiry is filtered through political loyalty rather than evidence, the truth suffers. The lab leak theory may or may not be the correct explanation — but dismissing it as conspiracy was never based on science.