WASHINGTON, May 12 -- US health regulators have approved Pfizer-BioNTech's Covid-19 vaccine for people between 12 and 15 years of age, making it the first for children.

It's the same vaccine that is being administrated to people 16 years and older and will be delivered in two separate shots of primer and a booster.

In a trial involving 2,260 participants, none of those given the vaccine contracted Covid-19 while 16 among those given a saline placebo tested positive.

Calling the emergency use authorisation "significant step" in the fight against the epidemic, Janet Woodcock, acting head of the Food and Drug Administration, said, "Today's action allows for a younger population to be protected from Covid-19, bringing us closer to returning ...