The researchers estimated vaccine effectiveness (VE) against long COVID in children aged 5 to 17 years. Though severe COVID-19 cases are less common in children than in adults, persistent symptoms in children do occur.
Those who received at least two vaccinations and had fewer repeat infections, and those who were infected with later variants of SARS-CoV-2 had lower measures of cognitive decline.
Researchers also found that vaccination against Covid, with either mRNA or viral vector shot, reduced the risk of developing a new autoimmune disease. They did not spell out in the study exactly how much vaccines reduced the risk of AIRDs.
the researchers found that long COVID was associated with how quickly inflammation and low iron levels regulated after acute infection. People who took a longer time to demonstrate regulation, and had more severe initial infections, were at an increased risk of long COVID.
