Immunity for Covid-19 remains high, even after some time; Understand!

Even if many people think otherwise, COVID-19 is still present all over the world. Studies reveal that, after almost a year, the natural immunity caused by the infection by COVID-19 remains high. There is an 88% lower risk of hospitalization or death from the virus for at least 10 months. See below for more details on this subject.

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Studies have shown that the level and duration of protection afforded by natural infection against the disease symptomatic, are at least equivalent to those provided by two doses of messenger RNA vaccines, with the immunizer from Pfizer.

Even if this scenario is real, is it still necessary to vaccinate?

Study co-author and researcher at the Institute for Health Metrics and Evaluation at the University of Washington School of Medicine, Caroline Stein, emphasizes the importance of vaccination.

Stein says that vaccines remain necessary and important for the general population. Including for people who have not been infected or those who received the last dose in the last six months.

More research has been done

The scientists reviewed and performed a meta-analysis of previous studies comparing unvaccinated people against reinfection and unvaccinated people without an infection. The research included 65 studies and 19 countries.

After the results were published, it was observed that the Immunity against reinfection of a pre-Omicron variant dropped from 85% at one month to about 79% at 10 months.

In the case of protection of a pre-Omicron variant infection against re-infection by Omicron BA.1, it fell from 74% to 36%, within the same period.

When it comes to serious illness, which includes, for example, hospitalization and death, the analysis revealed that immunity remained above 87% over the 10 months. This occurred both for the original strain and also for the variants.

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