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Pfizer says its Covid-19 vaccine is safe to use for children over age five

The vaccine would be administered at a lower dosage than for people over 12.

Image: PA

PFIZER AND BIONTECH have said trial results show their Covid-19 vaccine is safe and produced an imune response in children aged five to 11.

The vaccine would be administered at a lower dosage than for people over 12, they said.

“In participants five to 11 years of age, the vaccine was safe, well tolerated and showed robust neutralising antibody responses,” US giant Pfizer and its German partner said in a joint statement.

They plan to submit their data to regulatory bodies in the European Union, the United States and around the world “as soon as possible”.

The trial results are the first of their kind for children under 12, with a Moderna trial for six to 11 year olds still ongoing.

Both the Pfizer and Moderna jabs are already being administered to adolescents over 12 and adults in countries around the globe.

Although children are considered less at risk of severe Covid, there are concerns that the highly contagious Delta variant could lead to more serious cases, while innoculating children is also seen as key to keeping schools open and helping to end the pandemic.

“We are eager to extend the protection afforded by the vaccine to this younger population,” said Pfizer CEO Albert Bourla, noting that “since July, paediatric cases of COVID-19 have risen by about 240 percent in the US”.

Children in the trial group received a two-dose regimen of 10 microgrammes, compared with 30 microgrammes for older age groups, the companies said. The doses were given 21 days apart.

The 10 microgramme dose was “carefully selected as the preferred dose for safety, tolerability and immunogenicity” for that age group, the statement said.

The side effects were “generally comparable to those observed in participants 16 to 25 years of age”.

Among the most commonly reported side effects in the past have been pain and swelling at the injection site as well as headache, chills and fever.

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Israel has already given special authorisation to vaccinate children over five who are “at significant risk of serious illness or death” from Covid, using the Pfizer jab at the lower dosage.

Pfizer and BioNTech are also trialling their vaccine on infants aged six months to two years and on children aged two to five.

The topline results for those trials are expected “as soon as” the fourth quarter of this year, the companies said.

All together, up to 4,500 children aged six months to 11 years have enrolled in the Pfizer-BioNTech trials in the US, Finland, Poland and Spain.

The Pfizer vaccine is based on mRNA technology that delivers genetic instructions to cells to build the coronavirus spike protein, in order to evoke antibodies when bodies encounter the real virus.

- AFP 2021

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