As a prominent epidemiologist and statistician, Kulldorff has worked on detecting and monitoring infectious disease outbreaks for two decades. His methods are widely used around the world and by almost every state health department in the United States, as well as by hundreds of people at the Centers for Disease Control and Prevention (CDC).
Kulldorff has also worked on vaccine safety for decades, developing globally used methods for monitoring adverse reactions in new vaccines.
His résumé on the Food and Drug Administration (FDA) website is 45 pages long and includes a list of 201 peer-reviewed published journal papers. His work has been cited more than 27,000 times.
Since 2003, Kulldorff worked at Harvard Medical School, first as an associate professor of population medicine and later as a professor of medicine.
The Swedish native said he tried to point out in March 2020 that there was a very steep age gradient on mortality for COVID-19, the disease caused by the SARS-CoV-2 virus.
"I was able to publish in Sweden, in the major daily newspapers there during the spring of 2020, so that was not a problem," he said. "But the United States was not allowed to have a debate, which is very troubling."
Lockdowns were ineffective and unnecessary. But, any epidemiologist who disagreed found themselves on outside looking in and unable to speak.