Pfizer says its COVID-19 vaccine works in children ages 5 to 11

Coronavirus

Pfizer said Monday its COVID-19 vaccine works for children ages 5 to 11 and that it will seek U.S. authorization for this age group soon — a key step toward beginning vaccinations for youngsters.

The vaccine made by Pfizer and its German partner BioNTech already is available for anyone 12 and older. But with kids now back in school and the extra-contagious delta variant causing a huge jump in pediatric infections, many parents are anxiously awaiting vaccinations for their younger children.

For elementary school-aged kids, Pfizer tested a much lower dose — a third of the amount that’s in each shot given now. Yet after their second dose, children ages 5 to 11 developed coronavirus-fighting antibody levels just as strong as teenagers and young adults, Dr. Bill Gruber, a Pfizer senior vice president, told The Associated Press.

The kid dosage also proved safe, with similar or fewer temporary side effects — such as sore arms, fever or achiness — that teens experience, he said.

“I think we really hit the sweet spot,” said Gruber, who’s also a pediatrician.

Gruber said the companies aim to apply to the Food and Drug Administration by the end of the month for emergency use in this age group, followed shortly afterward with applications to European and British regulators.

Earlier this month, FDA chief Dr. Peter Marks told the AP that once Pfizer turns over its study results, his agency would evaluate the data “hopefully in a matter of weeks” to decide if the shots are safe and effective enough for younger kids.

Many Western countries so far have vaccinated no younger than age 12, awaiting evidence of what’s the right dose and that it works safely in smaller tots. But Cuba last week began immunizing children as young as 2 with its homegrown vaccines and Chinese regulators have cleared two of its brands down to age 3.

While kids are at lower risk of severe illness or death than older people, more than 5 million children in the U.S. have tested positive for COVID-19 since the pandemic began and at least 460 have died, according to the American Academy of Pediatrics. Cases in children have risen dramatically as the delta variant swept through the country.

“I feel a great sense of urgency” in making the vaccine available to children under 12, Gruber said. “There’s pent-up demand for parents to be able to have their children returned to a normal life.”

In New Jersey, 10-year-old Maya Huber asked why she couldn’t get vaccinated like her parents and both teen brothers have. Her mother, Dr. Nisha Gandhi, a critical care physician at Englewood Hospital, enrolled Maya in the Pfizer study at Rutgers University. But the family hasn’t eased up on their masking and other virus precautions until they learn if Maya received the real vaccine or a dummy shot.

Once she knows she’s protected, Maya’s first goal: “a huge sleepover with all my friends.”

Maya said it was exciting to be part of the study even though she was “super scared” about getting jabbed. But “after you get it, at least you feel like happy that you did it and relieved that it didn’t hurt,” she told the AP.

Pfizer said it studied the lower dose in 2,268 kindergartners and elementary school-aged kids. The FDA required what is called an immune “bridging” study: evidence that the younger children developed antibody levels already proven to be protective in teens and adults. That’s what Pfizer reported Monday in a press release, not a scientific publication. The study still is ongoing, and there haven’t yet been enough COVID-19 cases to compare rates between the vaccinated and those given a placebo — something that might offer additional evidence.

The study isn’t large enough to detect any extremely rare side effects, such as the heart inflammation that sometimes occurs after the second dose, mostly in young men. The FDA’s Marks said the pediatric studies should be large enough to rule out any higher risk to young children. Pfizer’s Gruber said once the vaccine is authorized for younger children, they’ll be carefully monitored for rare risks just like everyone else.

A second U.S. vaccine maker, Moderna, also is studying its shots in elementary school-aged children. Pfizer and Moderna are studying even younger tots as well, down to 6-month-olds. Results are expected later in the year.

Austin Regional Clinic trial contributed to Pfizer’s findings

Locally, Austin Regional Clinic was part of the trial. Pfizer allowed ARC slots for 75 children ages five to 11.

Dr. Jacques Benun, a pediatrician at ARC’s Manor clinic, lead the local vaccine trial in young kids. He said there was a lot more interest than just enough for the 75 slots available.

“Parents were begging to get be part of the trials,” Benun told KXAN.

However, he worries there’s still some hesitancy among parents in the community — and not just those who’ve been hesitant to get the vaccine themselves.

“There’s some parents who are all for it, who can’t wait for their children to get the vaccine, and those are parents that they themselves have been proactive about getting it for themselves. But then I got the other side of the token,” Benun explained. “I got families who are hesitant to get vaccines to themselves, and they don’t want their children to get it. And then, I get mixed in between, where parents did get vaccinated, but they’re nervous to get their kids vaccinated, and they want to wait longer.”

Benun urges against that mindset.

“I wouldn’t delay one day,” he said, explaining he’s seeing great immunity in his trial participants whose doses are a third of the amount adults and older kids receive.

Benun says side effects shouldn’t be of concern for parents.

“They’re very similar to the adults,” Benun said of the symptoms he’s seen in his trial participants. “Mild side effects. The main examples are, like, soreness on the side of the injection, headaches, body aches, chills.”

Benun says the overall volume of young children going through this Pfizer vaccine trial has been less because the enrollment process is more complicated, needing parental consent.

Still he says enough kids have been part of the trial to prove the shot’s efficacy.

Benun does predict the rollout may take longer than it did for older kids, much like what was seen when the vaccine was first available for adults. That’s because clinics can’t use current vaccine doses they already have. They’ll have to wait on the smaller kids’ doses to be distributed throughout the country.

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