Why you need vaccination even if you already have Covid-19

Covid-19 cases most often result in an immune response that provides protection against reinfection. Nevertheless, the CDC recommends vaccination for people who have been vaccinated with Covid-19. Here at Forbes Bruce Lee When William Hasertin I’m saying the same thing.

But are many still asking why? Here are four reasons.

The immune response of a vaccinated person is stronger than that of a person who is immune from an infectious disease

Antibodies are proteins that the body makes to protect itself from pathogens. Some of these antibodies are “neutralized” and prevent pathogens from infecting cells.

Several studies have compared the strength of neutralizing antibodies in the sera of previously vaccinated and vaccinated individuals.For example, a study by researchers at Emory University and the University of Texas School of Medicine was conducted in March last year. JAMA network The immune response of vaccinated individuals has been shown to be nearly 10 times that of those who have recovered from infection.

The immune response of vaccinated people is more reliable than those who are immune from infection

The same study also found that the immune response of those who had Covid-19 was about. Twice the variable Compared to the reaction of those who did not. In fact, many people who were actively ill at the time the study was being conducted did not initiate a measurable immune response at all. Not everyone in Covid-19 develops antibodies When Very large study involving over 30,000 cases It was found that only about 90% of people with antibody reactions developed neutralizing immunity.

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In addition, the likelihood of showing a strong antibody response is related to the severity of the disease.of Studies investigating the relationship with disease severity, Only 12 of 15 (80%) asymptomatic patients showed detectable levels of neutralizing antibodies, compared to 46 of 49 (94%) of mild cases and 100% of pneumonia. Was a patient. This is compared to the 100% response to vaccination with a double dose of Pfizer-BioNTech vaccine. German When We Clinical trials.

The immune response of a vaccinated person is stronger than that of a person who is immune from an infectious disease

With the rise of Genetically different mutants In the case of SARS-CoV-2, some strains of the virus may also “avoid” the acquired immune response. No data are yet available on the efficacy of all vaccines against all the different variants.

But an interesting study published earlier this summer focused on some of that question. Specifically, researchers compared how the sera of people infected with the original strain of the virus responded to the presentation of beta variants.Beta variants are for people infected with this variant Much more likely to indicate severe illness or death Compared to other variants.

Vaccination of people previously infected with SARS-CoV-2 provides an immune response to new mutants About 1000 times.. That’s a pretty big difference.

Vaccinated people are less likely to experience breakthrough infections than previously infected people who receive Covid-19 twice.

The fourth reason for this is the kicker. The studies cited above provide good reason to suggest that vaccination would be beneficial to those who previously had Covid-19, but the magnitude of its effect in real-world turmoil. I just recently got the data shown. Now, Recent CDC report, There is direct evidence.

Researchers collected data on people in Kentucky who became infected with SARS-CoV-2 in 2020 and subsequently became infected. Second time These data were compared to people who were infected in 2020 but did not re-infect. Only 27.2% of those who were re-infected were vaccinated, while 42.5% of those in the comparison group were vaccinated.

From these data, researchers found that the chances of re-infection without vaccination were 2.34 times higher than those who were vaccinated after recovering from Covid-19.

Reinfection with SARS-CoV-2 is rare, at least in the short term from the first case in a person, but very rare in a vaccinated person.