NYU Langone in Huntington held a COVID-19 vaccination clinic Thursday as the U.S. nears 1 million children ages 5-11 getting their first dose.

Organizers say 88 children were signed up to get the vaccine. Doctors say there may be some side effects, including fever, arm pain, body aches and pains.

Doctors are advising children to get the vaccination as soon as possible - even 11-year-olds, whose parents have frequently asked if they should wait until they're 12 years old to get a stronger dose.

"I've been advising them to get it as soon as possible if you can because if your child is not turning 12 until let's say January or February, we still want you to be protected for the holiday season," says Dr. Sara Siddiqui, of NYU Langone.

Health experts say the adult dose of the vaccine twice as strong as the children's dose.