Immunization Registry

The New York State Immunization Information System (NYSIIS) is a free, web-based statewide immunization information system, also called a registry, which maintains computerized immunization data of persons of all ages in a confidential and secure manner.

A Public Health Law signed in August of 2006 mandated the creation of a statewide registry for the purposes of collecting and storing required information on vaccinations administered to all persons less than 19 years of age. This law requires your child's doctor to record any immunizations given to your child. Participation for people 19 years or older is voluntary, their consent is needed.


An immunization registry acts as a connection between the multiple providers a family may have and keeps track of which immunizations have already been given, and which ones are needed. It helps sustain high immunization rates and low disease levels. It also helps ensure children get only the vaccines they need.

For more information about NYSIIS, visit the New York State Department of Health website.