Mexico City.- The US Food and Drug Administration (FDA) has licensed the Moderna vaccine for children 6 months to 5 years of age and the Pfizer-BioNTech vaccine for those 6 months to 4 years of age.
The Moderna vaccine consists of two doses of 25 micrograms each, a quarter of the adult dose, given four weeks apart.
Studies have shown it to be 51 percent effective in preventing disease in children 6 months to 2 years old and 37 percent effective in children 2 to 5 years old.
The Pfizer-BioNTech vaccine, which is for children ages 6 months to 4 years, consists of three injections of 3 micrograms each, one-tenth the adult dose.
The first two injections are given three weeks apart, and the third at least two months later.
The FDA has said that the companies’ clinical trial data show that each vaccine met criteria for safety and efficacy in the age group.