The stunning disclosure came in reply to a FOIA request for information on the CDC's claim, first made on Oct. 29, 2021, that unvaccinated people with previous infection were five times more likely to get COVID-19 than vaccinated people.

The CDC's claim was based on a CDC study published in the Nov. 9, 2021, edition of the Morbidity and Mortality Weekly Report. The conflicts-of-interest section of the study had noted that a number of the study's authors were being sponsored by pharmaceutical companies, including Pfizer, AstraZeneca, Merck, Sanofi, and GlaxoSmithKline. At least four of the listed pharmaceutical companies were involved in the manufacturing and sale of COVID-19 vaccines.

Given that the conflict-of-interest disclosures were made at the time the study was first published, the CDC would have been aware of the heightened need to scrutinize its findings. However, this appears not to have happened. Notably, the CDC's public pronouncement about unvaccinated COVID-19 survivors being five times more likely to get reinfected was made on the same day that the study was released as a preprint. This would have left no time for any review.