Establishes Children's Vaccine Adverse Event Reporting System.

S 657 establishes New Jersey's Children's Vaccine Adverse Event Reporting System (CVAERS) within the Department of Health. It requires health care providers (including doctors, nurses, and pharmacists who administer vaccines) to report any side effects experienced by children under 19 within eight weeks of vaccination, regardless of whether the provider believes the vaccine caused the reaction. Reports must include child and provider details, the vaccine administered, and specific symptoms, with all personal information kept confidential. The system will collect data to support vaccine safety research and automatically share non-mandatory reports with the federal VAERS system. This bill directly affects health care providers who vaccinate children and aims to improve vaccine safety monitoring.