Pfizer Covid vaccine in kids aged 5-11 cut Omicron hospitalisations by 68%

New York: Vaccination of 5 to 11-year-olds reduced hospitalisations with Covid-19 by more than two thirds during the Omicron surge and also protected against severe illness, according to a new study.

The Pfizer-BioNTech Covid-19 vaccine for children aged 5-11 was approved in October last year. Many parents have been hesitant to have children vaccinated. As of March 16, only 27 per cent of children aged 5-11 had received two vaccine doses, according to US Centers for Disease Control and Prevention data.

The study, published in The New England Journal of Medicine, also confirms that vaccination reduced Covid hospitalisation in adolescents aged 12-18 and protected strongly against severe illness.

“The reason for a child to get a Covid-19 vaccine is to prevent severe complications of SARS-CoV-2 infection, including hospitalisation,” said Adrienne Randolph from Boston Children’s Hospital.

“This evidence shows that vaccination reduces this risk substantially in 5 to 11-year-olds. And while vaccination provided adolescents with lower protection against hospitalisation with Omicron versus Delta, it prevented critical illness from both variants,” she added.

The study included 1,185 children with Covid at 31 paediatric hospitals across the US: 918 adolescents aged 12 to 18 and 267 children aged 5 to 11. The team also enrolled patients of similar age who were hospitalised for other reasons and served as controls.

Among children 5-11 hospitalised with Covid, 92 per cent were unvaccinated, and among 16 per cent who were critically ill, needing life support measures such as intubation, 90 per cent were unvaccinated. On the other hand, two doses of the Pfizer-BioNTech vaccine prevented hospitalisation in 68 per cent during Omicron.

Among adolescents aged 12-18 hospitalised with Covid-19, 87 per cent were unvaccinated. Twenty-seven per cent had critical illness, and of these, 93 per cent were unvaccinated. While two children died, vaccination was 96 per cent effective in preventing critical illness during the Delta period and 79 per cent during the Omicron wave.

“We hope our findings will help parents make the decision to vaccinate their children and teenagers against Covid-19,” Randolph said. “The benefits clearly outweigh the risks, as severe infections in childhood can have long-term consequences.”

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