Pfizer/BioNTech said that they are pursuing to get their COVID-19 vaccine authorized by the European Regulators for 12 to 15 year old children, which is a crucial step towards achieving herd immunity, on Friday.

The company had also filed a similar request with United States authorities earlier this month and are approved for ages 16 and over.

Pfizer and BioNTech said that they had submitted the request with the Amsterdam based European Medical Agency (EMA) to expand their use of vaccine to include adolescents from the age of 12 to 15.

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Ugur Sahin, co-founder and CEO of Germany’s BioNTech, on Thursday said the jab could be available for those age groups from June if EU approval is granted.

The move comes after phase 3 trial data showed that the vaccine provided “robust antibody responses” and was 100 percent effective in warding off the disease among those aged 12 to 15.

“The vaccine also was generally well tolerated,” the statement added.

In an interview with Der Spiegel weekly, Sahin said he expected regulators’ evaluation of the data to take four to six weeks.

If approved, the green light would apply to all 27 European Union member states.

Pfizer and BioNTech added that they also plan to seek authorisations “with other regulatory authorities worldwide”.

No coronavirus vaccines are currently authorised for use on children.

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While children and teenagers are less likely to develop severe Covid, they make up a large part of the population and inoculating them is considered key to ending the pandemic.

The prospect of getting older children jabbed before the next school year begins would also ease the strain on parents who are juggling the demands of homeschooling while keeping up with jobs.

“It’s very important to enable children a return to their normal school lives and allow them to meet with family and friends,” Sahin told Spiegel.

BioNTech and Pfizer are also racing to get their jab approved for younger kids, from six months upwards.

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“In July, the first results for five- to 12-year-olds could be available, and those for younger children in September,” Sahin said.

Ongoing trials so far are “very encouraging”, Sahin said, suggesting that “children are very well protected by the vaccine”.

The BioNTech/Pfizer shot is based on mRNA technology and was the first Covid-19 jab to be approved in the West late last year.