Recovered and unvaccinated pensioners become infected 20 times more often than vaccinated

Scientists from the U.S. Centers for Disease Control and Prevention are researching how often people have already

Those who have recovered from SARS-CoV-2 are reinfected with it, and how this process is affected by whether a person has been vaccinated or not. 

Researchers analyzed data on 7,348Patients who have had a previous illness or vaccination, such as Pfizer or Moderna 90-179 days before admission to the hospital. This means that some of the subjects have already suffered the disease once, and some were vaccinated with two doses of the vaccine.

As a result, it turned out that in the same age groups, the probability of infection among those who have recovered from the disease is higher than among those who have been vaccinated. 

In a group of vaccinated people of 6,328 peopleCoronavirus was confirmed in 324 patients (5.1%), and in the group of 1,020 people who recovered, 8.7% or 89 participants were re-infected. This means that those who have had coronavirus are 5.84 times more likely to become infected again compared to those who received two doses of the mRNA vaccine.

For the older generation, this gap increases several times: among the group over 65, the chance of getting infected again if you have had a previous illness is 19.57 times higher.

The authors conclude that reliable immunity is formed in those who were vaccinated and revaccinated on time, and not in those who were ill. 

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