'We now have additional evidence that reaffirms the importance of COVID-19 vaccines,' said CDC Director Dr. Rochelle Walensky.
found that vaccine-induced immunity was 5.49 times more protective than immunity from infection. The study analyzed data from the VISION Network, which includes 187 hospitals across nine states. The results contradict an Israeli study released in August, which found that those who had previously been infected with COVID-19 were significantly less likely to become infected with the Delta variant than the vaccinated.
"We now have additional evidence that reaffirms the importance of COVID-19 vaccines, even if you have had prior infection," CDC Director Dr. Rochelle Walensky said in a statement."This study adds more to the body of knowledge demonstrating the protection of vaccines against severe disease from COVID-19."
A new study from the CDC found that immunity from a COVID-19 vaccine was 5.49 times more effective at preventing future infections than immunity from a past COVID-19 infection. Above, a health care worker holds a vial of the Moderna COVID-19 vaccine in San Salvador, El Salvador, on August 5, 2021.
The vaccines included in the study were the mRNA shots produced by Moderna and Pfizer/BioNTech. Results aligned with other recent research showing that the Moderna vaccine was somewhat more effective at preventing infections, although both vaccines offered significant protection and each were superior to natural immunity. The Johnson & Johnson vaccine was not included in the study.
The Israeli study was sometimes cited by vaccine opponents as evidence that so-called"natural immunity" was superior to immunity from vaccines. Regardless of the level of protection, medical experts have nearly uniformly advised against reckless suggestions of becoming intentionally infected to acquire immunity. Over 740,000 people in the U.S. have died from COVID-19.
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