: Four COVID-19 vaccines are being tested in children and teens. Here’s when different age groups could become eligible for shots.

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Moderna’s vaccine is expected to be next authorized in teens, following the Food and Drug Administration’s decision in mid-May to allow younger teens to get the Pfizer shots.

There are three COVID-19 vaccines authorized in the U.S., primarily for adults. They are BioNTech and Pfizer’s shots, Moderna Inc.’s COVID-19 vaccine, and the Johnson & Johnson single-dose jab. All of those companies, along with Novavax Inc., which has not yet received authorization for its COVID-19 vaccine, have started to test their shots in teens and children.

Below is a timeline of when to expect clinical data and emergency authorizations going forward.

This story will be updated on a rolling basis.

BioNTech SE
BNTX,
+5.08%

and Pfizer Inc.’s
PFE,
+0.46%

COVID-19 vaccine

Type of vaccine: mRNA, two doses spaced three weeks apart.

FDA emergency-use authorization: 16 years old and older, as of Dec. 11, 2020. The authorization was expanded to include 12- to 15-year-olds on May 10.

FDA approval? No (application submitted May 7).

12 to 15 years old

EUA? Yes.

Phase 3 clinical-trial data: 100% efficacy in a placebo-controlled study of 2,260 teens who have had or not had COVID-19.

Side effects: They are similar to the study testing the vaccine in people between the ages of 16 and 25, according to Pfizer.

5 to 11 years old

EUA? Expected to be submitted in mid-September.

Clinical-trial data: Expected in mid-September.

2 to 5 years old

• EUA? Expected to be submitted in mid-September.

Clinical-trial data: Expected in mid-September.

6 months to 2 years old

EUA? Expected submission to FDA in late November.

Clinical-trial data: Expected in early November.

Source: Pfizer

Moderna Inc.’s
MRNA,
+2.34%

COVID-19 vaccine

• Type of vaccine: mRNA, two doses, spaced four weeks apart.

FDA emergency-use authorization: 18 years old and older, as of Dec. 18, 2020.

FDA approval? No.

12 to 17 years old

Submitted application to the FDA for expanded EUA? On June 10.

Phase 2/3 clinical-trial data: Of the roughly 2,500 teens enrolled in the study, there were no confirmed cases of COVID-19, the company said in June. The company initially said the two-shot vaccine had 96% efficacy in 3,235 participants who received one dose, with further data to come.

Side effects: No serious safety concerns; adverse events similar to adults. Injection site pain was the most common issue reported in the trial.

6 months to 11 years old

EUA? No.

Phase 2/3 clinical trial: 6,750 participants being enrolled; ongoing. This study has two parts and will evaluate three smaller doses for 6-month-olds to 2-year-olds and two different dose levels for 2-year-olds to 11-year-olds. The trial will then evaluate a selected dose for each age group against a placebo.

Source: Moderna

Johnson & Johnson’s
JNJ,
+0.48%

COVID-19 vaccine

• Type of vaccine: Adenovirus vector-based, one dose.

FDA emergency-use authorization: 18 years old and older, as of Feb. 27, 2021.

FDA approval? No.

12 to 17 years old

Submitted application to the FDA for expanded EUA? No.

Phase 2 clinical trial: J&J said in April that it had started to enroll teens in the ongoing Phase 2a clinical study assessing its COVID-19 shot. It has not said how many teens are enrolled in the study, only that the shot is being tested in a small group of adolescents before it is expanded to a large group.

Source: Johnson & Johnson

Novavax Inc.’s
NVAX,
+2.07%

experimental COVID-19 vaccine

Type of vaccine: Recombinant protein, two doses, three weeks apart.

FDA emergency-use authorization: No.

• FDA approval: No.

12 to 17 years old

Submitted application to the FDA for expanded EUA? No.

Phase 3 clinical trial: Novavax said May 3 it will add 3,000 adolescents between the ages of 12 and 17 to its ongoing late-stage study.

Source: Novavax