The Centers for Disease Control and Prevention will not publish a study on the effectiveness of COVID-19 vaccination, its top official confirmed late on April 22.
Dr. Jay Bhattacharya, who is serving as the CDC director while the Senate considers President Donald Trump’s nominee for the position, said the paper used a problematic methodology and would thus not be published in the CDC’s quasi-journal, the Morbidity and Mortality Weekly Report (MMWR).
“The study uses a test negative design that will not produce an unbiased estimate of efficacy (and it’s impossible to say which way the bias will go),” Bhattacharya said in a post on X. “MMWR should not be a place where such studies are published.”…