Pfizer says its vaccine is safe and effective for kids 12 and up Pfizer announces vaccine safe for kids as young as 12 By Chris Rosato | March 31, 2021 at 6:34 PM CDT - Updated March 31 at 6:35 PM BATON ROUGE, La. (WAFB) - In an effort to get as many teens and young kids vaccinated before school starts next fall, Pfizer announced on Wednesday, March 31, that its vaccine is now safe and effective for kids as young as 12 years old and is aiming to bring the age down even farther in the near future. Health professionals say this could be the green light. “The virus neutralizing antibody titers, which is probably the closest thing we have to a surrogate for protection, was super high in the vaccinated group,” said Dr. Peter Hotez, co-director of the Center for Vaccine Development at Texas Children’s Hospital. “So, I think it’s likely a green light to move forward, to move down in terms of vaccinating adolescents 12 to 15.”