Dec. 2 (UPI) -- U.S. drugmaker Moderna on Wednesday said it plans to soon begin testing its COVID-19 vaccine in children ages 12 through 17.
Notes listed on clinicaltrials.gov said the study will include 3,000 participants -- half of whom will receive the vaccine, while the other half receive a placebo -- in order to "evaluate the safety" of a single-dose level of the vaccine administered to "an adolescent population."
Both the vaccine and placebo will be administered in two doses 28 days apart.
The web page for the study said it is not yet recruiting candidates and Moderna spokeswoman Colleen Hussey told The New York Times the company was not certain when testing sites would be listed or begin accepting volunteers.
The company's vaccine has not been tested on children or pregnant women.
Fellow drugmaker Pfizer began testing its vaccine on children as young as 12 in October and AstraZeneca has begun trials on children but solely outside of the United States.
Pfizer and BioNTech have also applied for an emergency use authorization and the FDA's Vaccines and Related Biological Products Advisory Committee plans to meet Dec. 10 to review the vaccine and recommend whether it should be cleared.