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Reinfection with COVID-19 increases risk of acute outcomes - study

"Reinfection with COVID-19 increases the risk of both acute outcomes and long COVID," said Dr. Ziyad Al-Aly of Washington University School of Medicine in St. Louis. "This was evident in unvaccinated, vaccinated and boosted people."

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The researchers said cumulative risks and burdens of repeat infection increased with the number of infections, even after accounting for differences in COVID-19 variants such as Delta, Omicron and BA.5.