Coronavirus Vaccine

COVID-19 Vaccine Reduces Long COVID Risk In Children: Study

The finding, published in the journal Pediatrics, also shows that vaccination has a stronger effect in adolescents, who have a higher risk of developing long COVID than young children

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The vaccination rate was 56 per cent in the cohort of 1,037,936 (over 10 lakh) children

New Delhi: Vaccination against the SARS-CoV-2 virus provides moderate protection against long COVID which presents persistent health problems in the months after the infection, a study has found. The finding, published in the journal Pediatrics, also shows that vaccination has a stronger effect in adolescents, who have a higher risk of developing long COVID than young children. While overall severity of COVID-19 has been lower in children than adults, the burden of long COVID has been difficult to accurately describe since the symptoms can vary widely and the exact ways the virus causes them are unknown, the researchers said.

Also Read: Vaccine Regulators, WHO Officials To Strategise Integration Of COVID-19 Vaccines In Routine Immunisation

Some symptoms include brain fog, dyspnea, gastrointestinal dysfunction, generalised pain and fatigue, while others are more acute, like inflammatory reaction or heart problems, they said. Lead study author Hanieh Razzaghi from Children’s Hospital of Philadelphia (CHOP), US, said,

To date, no studies have assessed clinical data for large, diverse groups of children to address this important question. Using clinical data from across health care networks allowed us to have a large enough sample of patients to identify rare effects of the virus and its impact on children.

Data from 17 health systems were used to assess vaccine effectiveness against long COVID in two groups of patients between five and 11 years old and 12 and 17 years old, respectively, as well as the time period in which patients were impacted.

The vaccination rate was 56 per cent in the cohort of 1,037,936 (over 10 lakh) children.

The incidence of probable long COVID was 4.5 per cent among patients with COVID-19, though only 0.7 per cent of patients were clinically diagnosed with long COVID.

The study estimated effectiveness of the vaccine within 12 months of administration as 35.4 per cent against probable long COVID and 41.7 per cent against diagnosed long COVID.

The estimate was higher in adolescents compared with younger children, and higher at six months (61.4 per cent) but decreased to 10.6 per cent at 18 months.

Children who were vaccinated after recovering from COVID-19 also appeared to benefit, with vaccine effectiveness of 46 per cent against probable long COVID after a subsequent episode of COVID-19. Senior study author Charles Bailey, Associate Professor of Pediatrics at CHOP, said,

This study provides us with important data showing the protective effects of the vaccine against long-haul COVID and suggests that this protection is mostly from preventing visible infections. We hope this means that as vaccines are improved to be more effective against current strains of SARS-CoV-2, their protection against long COVID will get better, too.

Also Read: “No Need For Additional Dose Of Vaccine For JN.1,” Says India SARS-CoV-2 Genomics Consortium Chief

(This story has not been edited by NDTV staff and is published from a syndicated feed.)

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