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Science And Nature

How multiple COVID-19 infections could harm your body

With reinfections increasing, scientists warn that all bout increases your threat of troubling outcomes, from long COVID to cardiovascular disease.

Published July 29, 2022

10 min read

Ziyad Al-Aly pointed out that a lot more patients were arriving at his Missouri clinic using what he describes being an air of invincibility. It had been March 2022, and these patients were vaccinated and boosted against COVID-19, plus they also had recently recovered from contamination. Within their minds, the combined immunity would shield them from further harm.

I started thinking, is this really true? says Al-Aly, chief of research and development at the Veterans Affairs St. Louis Healthcare System and a clinical epidemiologist at Washington University in St. Louis. Intrigued, he considered the VAs medical records database to discover.

Time has since clarified there are cracks in the shield developed by both natural and vaccine-induced immunity: Reinfection rates are rising with the emergence of the more infectious Omicron variant, with some individuals even reporting their third or fourth infection. Studies have also shown that the Omicron subvariants tend to be more with the capacity of evading previous immunity. (Why Omicron variants BA.4 and BA.5 are causing fresh U.S. outbreaks.)

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