Locations
Maine
Statistics on children, youth and families in Maine from the Annie E. Casey Foundation and the Maine Children's Alliance
Why This Indicator Matters
Vaccines help protect infants, children, and teens from serious diseases. Getting childhood vaccines allows children to develop immunity against diseases before they come into contact with them.
It also helps keep the community safe from these diseases spreading in families, schools, child care and in the broader community. For more info, see CDC Vaccines- Who and When
What the data shows
The most recent childhood immunization state rate of 71.8% in 2025, well below the 2017 state rate of 76.7%. The county with the highest rate in 2025 was Franklin County at 80.3%. The next two highest counties were Cumberland (78.2%) and Sagadahoc (77.1%). The three lowest counties were Piscataquis (56.0%), Hancock (64.8%), and Waldo (65.3%).
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It also helps keep the community safe from these diseases spreading in families, schools, child care and in the broader community. For more info, see CDC Vaccines- Who and When
What the data shows
The most recent childhood immunization state rate of 71.8% in 2025, well below the 2017 state rate of 76.7%. The county with the highest rate in 2025 was Franklin County at 80.3%. The next two highest counties were Cumberland (78.2%) and Sagadahoc (77.1%). The three lowest counties were Piscataquis (56.0%), Hancock (64.8%), and Waldo (65.3%).
Definition and Source
PROVIDER
Definition
This is called the 4313314 coverage. This includes 4 DTap (Diphtheria, Tetanus, Pertussis): 3 IPV (Polio): 1 MMR (Measles, Mumps, Rubella): 3 Hib (Haemophilus influenza type B): 3 HepB (Hepatitis B): 1 Var (Varicella): 4 PCV (Pneumococcal Conjugate) schedule.
Data Source
Other sources report on 6 vaccines, but the 7 vaccines in the group, " 4313314 coverage." is the standard in Maine. The Maine Immunization Program conducts an immunization assessment on the 1st of each quarter (January, April, July, October) which includes all 2 year-olds in the State of Maine immunization registry, ImmPact, associated to a practice which enters client specific data. This assessment follows the standard Centers for Disease Control and Prevention childhood assessment criteria of 24-35 months of age immunized as of 24 months for the 7 vaccines listed in the definitions section.
Children are counted based on the county of the physicians' practices, In Sagadahoc County for example, children may have their medical care in Brunswick which is Cumberland County, so would be included there.
Children are counted based on the county of the physicians' practices, In Sagadahoc County for example, children may have their medical care in Brunswick which is Cumberland County, so would be included there.
Notes
This series is based on the 4th quarter of the calendar year, as annual reports are no longer available. The denominator is all children ages 24 to 35 months as of the last day of December and the numerator is the number of those children who had all 7 vaccinations.
Last Updated
March 2026