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Martin Kulldorff, Ph.D., an epidemiologist and professor of Medicine at Harvard University, on Monday confirmed the university fired him.

Kulldorff has been a critic of lockdown policies, school closures and vaccine mandates since early in the COVID-19 pandemic. In October 2020, he published the Great Barrington Declaration, along with co-authors Oxford epidemiologist Sunetra Gupta, Ph.D., and Stanford epidemiologist and health economist Jay Bhattacharya, M.D., Ph.D.

In an essay published Monday in City Journal, Kulldorff wrote that his anti-mandate position got him fired from the Mass General Brigham hospital system, where he also worked, and consequently from his Harvard faculty position.

Kulldorff detailed how his commitment to scientific inquiry put him at odds with a system that he alleged had “lost its way.”

“I am no longer a professor of medicine at Harvard,” Kulldorff wrote. “The Harvard motto is Veritas, Latin for truth. But, as I discovered, truth can get you fired.”

He noted that it was clear from early 2020 that lockdowns would be futile for controlling the pandemic.

“It was also clear that lockdowns would inflict enormous collateral damage, not only on education but also on public health, including treatment for cancer, cardiovascular disease, and mental health,” Kulldorff wrote.

“We will be dealing with the harm done for decades. Our children, the elderly, the middle class, the working class, and the poor around the world — all will suffer.”

That viewpoint got little debate in the mainstream media until the epidemiologist and his colleagues published the Great Barrington Declaration, signed by nearly 1 million public health professionals from across the world.

The document made clear that no scientific consensus existed for lockdown measures in a pandemic. It argued instead for a “focused protection” approach for pandemic management that would protect high-risk populations, such as elderly or medically compromised people, and otherwise allow the COVID-19 virus to circulate among the healthy population.

Although the declaration merely summed up what previously had been conventional wisdom in public health, it was subject to tremendous backlash. Emails obtained through a Freedom of Information Act request revealed that Dr. Francis Collins, then-director of the National Institutes of Health called for a “devastating published takedown” of the declaration and of the authors, who were subsequently slandered in mainstream and social media.

Collins and other figures, including Dr. Rochelle Walensky who would go on to head up the Centers for Disease Control and Prevention (CDC) during the pandemic, sought to undermine their credibility, Kulldorff wrote.

His tweets contradicting CDC policy that people with natural immunity must be vaccinated were flagged by the Virality Project, a government front group, and censored by Twitter (now X).

“At this point, it was clear that I faced a choice between science or my academic career,” Kulldorff wrote. “I chose the former. What is science if we do not humbly pursue the truth?”

Kulldorff said he was also fired from the CDC COVID-19 Vaccine Safety Technical Work Group because he disagreed with the decision to completely pause the Johnson & Johnson adenovirus COVID-19 vaccine after a safety signal was detected for blood clots in women under 50.

He spoke out in op-eds and social media to argue the Johnson & Johnson shot should remain available for older Americans alongside the Pfizer and Moderna shots — the only other shots available in the U.S. market.

While Kulldorff’s arguments advocating the Johnson & Johnson vaccines may be flawed, investigative journalist Jordan Schachtel wrote today on his Substack, Kulldorff’s story reveals a “more powerful truth.”

“He found out the hard way that there is no crossing the tracks of the institutional freight train that is the Big Pharma-Government Health system of institutional capture that persists in America today,” Schachtel wrote.

“He threatened the gravy train that produced hundreds of billions of lawsuit-protected taxpayer dollars that were making their way to Pfizer and Moderna,” Schachtel added. “And for that sin, he was swiftly removed from his role on the CDC working group.”

Harvard also denied Kulldorff’s vaccine exemption requests. He publicly opposed the Harvard mandates and pushed for the university to rehire those who were fired and to eliminate its mandate for students.

The university last week dropped its COVID-19 mandate for students.

“Veritas has not been the guiding principle of Harvard leaders,” Kulldorff concluded. “Nor have academic freedom, intellectual curiosity, independence from external forces, or concern for ordinary people guided their decisions.”

To right the wrongs that have been done, he said, the broader scientific community must restore academic freedom and end “cancel culture.”

“Science cannot survive in a society that does not value truth and strive to discover it,” he wrote. “The scientific community will gradually lose public support and slowly disintegrate in such a culture.”

Harvard Medical School did not respond to The Defender’s request for comment.