An international team of doctors from the Institute for Health Metrics and Evaluation (an independent international organization specializing in health research) conducted a study and found that in patients who were previously infected with SARS-CoV-2, the risk of hospitalization or death from COVID-19 is reduced by 88% within ten months. The results of the study were published in the Lancet .
As part of the work, scientists analyzed 65 papers on the topic of COVID-19, conducted in 19 countries. As it turned out, protection against re-infection with pre-omicron strains was 85% within one month and decreased to about 79% after ten months. Omicron protection was initially lower and declined faster to 36% after about ten months. Moreover, if the patient had a severe disease, then the protection was higher: 90% for alpha and delta strains and 88% for omicron.
Previously, scientists from Columbia University found that COVID-19 infection can cause changes in the calcium channels of heart cells, which leads to disruption of its work.
