Connecticut MMR Vaccination Coverage
Last updated:
What is the kindergarten MMR vaccination rate in Connecticut? This page showsConnecticut's measles, mumps, and rubella (MMR) vaccine coverage among kindergartners, whether it meets the 95% herd immunity threshold, and how it compares to nearby states. Data comes from the CDC's SchoolVaxView survey. Also seeConnecticut measles cases.
kindergarten MMR coverage
2024-25 school year
Exemption Rates (2024-25)
Key Takeaways
- 1Connecticut kindergarten MMR coverage is 98.2% for the 2024-25 school year.
- 2This meets the 95% herd immunity threshold for measles.
- 3Coverage has improved over recent years, up from 95.3% in 2020-21.
- 4Non-medical exemptions (0.1%) account for most of the exemption rate.
- 5The JHU state tracker currently lists 1 measles case for Connecticut in its 2026 view.
Practical Steps for This Signal
Statewide kindergarten coverage is strong
- •The statewide average is above the 95% community-protection reference, but coverage can still differ by school and community
- •Keep your family's vaccinations current as children reach school age
- •Use school, county, or local health-department data when you need a more local view of coverage gaps
These general steps pair Local Health Signal's interpretation of the reported public-health signal with CDC prevention guidance. They are not a personal risk assessment or medical advice. Talk to your healthcare provider about what's right for you and your family.
Connecticut MMR Coverage Trend
Kindergarten MMR coverage rates by school year. Red dashed line = 95% herd immunity threshold.
Measles Cases in Connecticut
The JHU state tracker currently lists 1 measles case for Connecticut in its 2026 view. Use the measles page for local guidance and county detail if you need more than the statewide count.
View Connecticut measles data →Nearby States MMR Coverage
| State | Coverage | Below 95% |
|---|---|---|
| 97.8% | No | |
| 96.6% | No | |
| 96.7% | No |
Sources & Methods
MMR coverage data comes from the CDC's SchoolVaxView program, which collects kindergarten vaccination coverage estimates reported by states and territories. Coverage is for the 2024-25 school year. Risk levels are computed relative to the 95% herd immunity threshold.Learn more about our methods.
More Health Data for Connecticut
Best Next Clicks for Connecticut
Cities in Connecticut
Health data available for these Connecticut cities:
Frequently Asked Questions
What is the MMR vaccination rate in Connecticut?
Kindergarten MMR coverage in Connecticut is 98.2% for the 2024-25 school year. This meets the 95% herd immunity threshold.
Why is 95% coverage important?
Measles is extremely contagious. About 95% of a community needs to be vaccinated to prevent sustained transmission — this is called herd immunity. When coverage drops below this threshold, outbreaks become more likely, putting unvaccinated individuals at risk.
What are vaccine exemptions?
Vaccine exemptions allow children to attend school without certain vaccinations. Medical exemptions are granted for children who cannot be safely vaccinated. Non-medical exemptions (religious or philosophical) vary by state law. Higher exemption rates are associated with lower coverage and increased outbreak risk.
Local Health Signal is not affiliated with the CDC or any government agency. Data is provided for informational purposes only and is not intended for clinical decision making. See our methods page for details on data sources and limitations.