What pediatricians want parents to know about the upcoming COVID-19 shots for children under 5

Roughly 23 million children in the U.S. can’t get a vaccine against COVID-19 — but that may soon change.

Pfizer and BioNTech have requested an emergency use authorization from the Food and Drug Administration for a two-shot, low-dose regimen for children 6 months to 5 years old. It would be the first COVID-19 vaccine available for the age group in the U.S. 

Clinical trial data shows that the vaccine is safe, the companies say, but researchers are still testing a third dose following results that showed that the first two didn’t mount...