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Massachusetts Immunization Information System (MIIS) Overview

The Massachusetts Immunization Information System (MIIS) is a web-based immunization registry.

Welcome to the MIIS

The Massachusetts Department of Public Health Immunization Division is committed to promoting the health of Massachusetts' citizens by reducing the burden of vaccine preventable diseases that affect the residents of the Commonwealth. As part of this effort, in 2011 the MDPH Immunization Division launched MIIS. The MIIS is in the process of being rolled out statewide and once fully implemented will be the official source of immunization information for Massachusetts.

Information for Parents and Patients

Information for Providers 

Overview of the MIIS

The goal of the MIIS is to give health care providers and families a tool to help ensure that all individuals are immunized based on the latest recommendations. The MIIS will establish a complete, accurate, secure, real-time immunization record for residents of Massachusetts of all ages.

An immunization registry provides numerous benefits to all those involved in the health care of children and adults, contributing to a higher immunization rate and a healthier population.

  • Providers have access to more complete immunization records of their patients and receive clinical decision support in accordance with an increasingly complex vaccination schedule.
  • Individuals, parents and caregivers get reminders when an immunization has been missed. Up-to-date information on a person's vaccination history helps to prevent over-immunization.
  • Schools will be able to save time in complying with immunization requirements.
  • Public health systems will use the information to help monitor and control vaccine preventable diseases.