Pfizer vaccine much less efficient towards COVID-19 in children aged 5-11: Study

The effectiveness of the Pfizer COVID-19 vaccine for youngsters waned rapidly in the course of the Omicron surge within the US, particularly amongst these aged 5 to 11 years, however the preventive was nonetheless protecting towards extreme illness, in keeping with a examine. Researchers from the New York State Division of Well being and the College at Albany Faculty of Public Well being, US, estimated the effectiveness of Pfizer vaccine towards COVID circumstances and hospitalisations.

They used information from 852,384 fully-vaccinated youngsters of 12-17 years of age and 365,502 youngsters aged 5-11 years throughout December, 2021 and January, 2022.

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The yet-to-be peer-reviewed examine, posted on the preprint repository MedRxiv on Monday, discovered that the effectiveness of the Pfizer pictures towards an infection attributable to the Omicron variant fell from 68 per cent to only 12 per cent in youngsters 5 to 11 years outdated inside one month of being absolutely vaccinated.

parenting-759 A surge of Omicron circumstances gripped the world early this 12 months, affecting youngsters as properly. (Consultant Picture/Pexels)

Effectiveness towards hospitalisation in the identical age group was increased but in addition dropped considerably, falling from 100 per cent in early December to only 48 per cent by the tip of January.

The examine additionally discovered that whereas vaccine effectiveness fell for older youngsters and youths, it fell extra slowly than it did for smaller youngsters.

The vaccine effectiveness waned from 66 per cent in early December to 51 per cent by the tip of January for youngsters within the age group of 12 to 17, the researchers stated.

For hospitalisations, vaccine effectiveness fell from 85 per cent to 73 per cent over the identical timeframe, they stated.

“In the Omicron era, the effectiveness against cases of BNT162b2 (Pfizer) declined rapidly for children, particularly those 5-11 years,” the authors of the examine stated.

“However, vaccination of children 5-11 years was protective against severe disease and is recommended,” they added.

The researchers stated these outcomes spotlight the potential want to review various vaccine dosing for youngsters and the continued significance layered protections, together with masks carrying, to forestall an infection and transmission.

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