Home COVID-19 COVID-19 Vaccines Provide 5 Times Stronger Immunity Than Natural Immunity, CDC Study...

COVID-19 Vaccines Provide 5 Times Stronger Immunity Than Natural Immunity, CDC Study Founds

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Denpa News Unvaccinated people who have had a recent infection are five times more likely to be reinfected with the coronavirus than those who have been fully vaccinated without a previous infection, according to a new study published in the CDC Morbidity and Mortality Weekly Report. 

The research team concluded that vaccination likely provides a higher, stronger, and more robust level of immunity against hospitalization for Covid-19 than infection alone, for at least six months. 

“We now have additional evidence reaffirming the importance of Covid-19 vaccines, even in cases of the previous infection,” CDC Director Dr. Rochelle Walensky said in a statement. 

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“This study adds to the body of knowledge demonstrating the protection of vaccines against severe Covid-19,” she said. “The best way to stop Covid-19, including the outbreak of variants, is through widespread Covid-19 vaccination and in addition disease prevention actions such as wearing masks, frequent hand washing, physical distancing and staying home when sick.” 

The researchers examined data from the VISION network, which included more than 201,000 hospitalizations for Covid-like illness in 187 hospitals in nine states between January 1 and September 2. More than 94,000 of them underwent rapid testing for coronavirus, and 7,300 had lab-confirmed testing for Covid-19. 

The research team found that unvaccinated individuals with a previous infection within 3-6 months were about 5-1/2 times more likely to have lab-confirmed Covid-19 than those who were fully vaccinated with the Pfizer vaccine within 3-6 months. or Moderna vaccine. The results were similar in the months when the Delta variant was the dominant coronavirus strain. 

The protection given by the Moderna vaccine “appeared to be higher” than for the Pfizer vaccine, the study authors wrote. The increase in protection was also “usually greater” in the elderly than in those under the age of 65. 

The research team noted that these estimates may change over time as immunity wanes. Future studies should look at infection- and vaccine-induced immunity during the pandemic, they wrote. 

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