Parents will still be able to seek out shots from rival drugmaker Moderna, the other maker of mRNA vaccines, which has full FDA approval for children as young as 6 months. But the company’s Spikevax vaccine is only approved for children with at least one serious health problem.

While the agency cleared vaccines from Pfizer, Moderna and Novavax broadly in older adults, it restricted eligibility in younger people to those with underlying health conditions.