The Food and Drug Administration on Wednesday granted emergency use authorization to booster shots of Moderna and Johnson & Johnson’s COVID vaccines. The FDA also approved a mix-and-match strategy for people to get a booster shot that wasn’t in their primary series.

Meanwhile, the White House on Wednesday laid out its plan to vaccinate millions of children between 5 and 11 years old, once the Pfizer-BioNTech vaccine is approved for emergency use in younger children. White House coronavirus response coordinator Jeff Zients said the Biden administration was ready to move quickly to distribute children’s doses and smaller-sized syringes to pharmacies and pediatricians’ offices.

Jeffrey Zients: “We have more than enough vaccine for every child aged 5 through 11 — that’s 28 million in total — as soon as the vaccine is authorized by the FDA.”

The White House anticipates younger children could receive their first shots of Pfizer’s COVID vaccine in early November.