Unvaccinated Adults at Risk of Reinfection with the Virus, CDC


People who are infected with the coronavirus but are not vaccinated may be twice as likely to be reinfected as those who test positive and boost their natural immunity with a vaccine, according to a small study that evaluated the possibility of re-infection.

Research by the Centers for Disease Control and Prevention, studied the risk of re-infection In May and June, among hundreds of Kentucky residents who tested positive for the virus in 2020.

Those who were not vaccinated this year faced a 2.34 higher risk of reinfection than those who were vaccinated. The study, published Friday, suggests that for those who have overcome an infection, the addition of a vaccine provides better protection than the innate immunity generated by their original encounter with the virus alone.

Although the study examined only a small number of people in Kentucky, it seems to counter the argument of Rand Paul, one of the state’s U.S. senators, who has repeatedly argued that the vaccine is unnecessary for people like him who are infected with the virus. and improved immunity.

CDC director Dr. Rochelle Walensky said the data reinforces the importance of vaccination, even for those who have had the virus before.

Dr. “If you have had Covid-19 before, please get vaccinated anyway,” Walensky said. “Especially as the more contagious Delta variant spreads across the country, the best way to protect yourself and those around you is to get vaccinated.”

The study authors cautioned that not much is known about how long innate immunity to the virus lasts, and that genomic sequencing has not been done to confirm reinfections among those in the study.

The CDC and Biden administration have been aggressively campaigning to increase vaccinations in recent weeks as cases and hospitalizations have increased in large part due to the Delta variant, particularly in areas with low vaccination rates.

Last week, the number of new virus cases reported each day reached an average of 100,200 as of Thursday, with the daily average exceeding 100,000 for the first time since mid-February. According to the New York Times database.

Another study published Friday reported that he was vaccinated Significantly reduced hospitalizations for COVID among the elderly in February, March and April. The study examined data from 7,280 patients in a Covid hospitalization surveillance network, using government records to look at their vaccination status. The vast majority of hospital patients were not vaccinated or were only partially vaccinated; only 5 percent are fully vaccinated.

Although the vaccine did not completely eliminate infections, the risk of hospitalization was significantly lower in fully vaccinated people. Among those aged 65 to 74, the Pfizer-BioNTech and Moderna vaccines reduced the risk of COVID-related hospitalizations by 96 percent, and the Johnson & Johnson single-dose vaccine reduced hospitalizations by 84 percent. In the 75 and older age group, the Pfizer vaccine reduced hospitalizations by 91 percent; Moderna vaccine 96 percent; and the Johnson & Johnson vaccine at 85 percent.


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