The Latest on Vaccines for Kids Under 5

Apoorva MandavilliReporting on the coronavirus

But isn’t there new data on the vaccine’s effectiveness in children under 5?

As the trial continued through December, some children became infected with the Omicron variant, giving the companies insight into the vaccine’s performance in the real world, and prompting the Food and Drug Administration to consider authorizing two doses of the vaccine.

But as the number of infections grew, the data did not support that decision.