Missouri Measles Cases in 2026
Last updated:
confirmed measles cases in Missouri in 2026 (Missouri Department of Health and Senior Services dashboard, checked Sep 29, 2026)
The JHU tracker separately lists 2 in its approximate 2026 view. Check the live official state dashboard.
Dashboard checked 2026-09-29
Multiple measles cases have been reported. Check local health guidance for outbreak-specific instructions.
Key Takeaways
- 1Missouri Department of Health and Senior Services dashboard showed 11 confirmed measles cases in Missouri in 2026 when checked on September 29, 2026.
- 2The JHU tracker separately assigns 2 to its approximate 2026 view; that tracker subtotal is not the official state count.
- 3Use local health department guidance for outbreak-specific instructions, school decisions, and exposure follow-up.
- 4Missouri's kindergarten MMR coverage is 90%, which sits below the 95% herd-immunity threshold.
- 5Recent 2026 county-level reports are listed below when public case detail is available.
- 6The current JHU tracker views for nearby states Illinois, Iowa, Kansas also include cases.
Practical Steps for This Signal
Higher measles case signal — check official local guidance
- •The CDC strongly recommends MMR vaccination for anyone who is not up to date
- •Measles is extremely contagious — it spreads through the air and can linger in a room for 2 hours after an infected person leaves
- •If you develop symptoms, call your doctor BEFORE going in — they need to prepare to avoid exposing others
- •Use state and local health-department notices to identify confirmed exposure locations or formal outbreak guidance
- •Ask a healthcare provider about precautions for infants too young for routine MMR vaccination
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.
Source and context
How this page is built
Updated
Official dashboard checked: Sep 29, 2026; JHU tracker: Sep 17, 2026
Coverage
State dashboard observation plus separate approximate JHU county tracker detail
Best For
Reading the linked live state dashboard alongside approximate tracker context
The lead count was observed on the official dashboard on the date shown and may change. JHU’s separate county rows are cumulative and its 2026 subtotal is approximate. The linked dashboard includes locality detail; this statewide summary does not establish exposure or formal outbreak status. Check local guidance for urgent exposure decisions.
County Breakdown — Missouri
| County | Cases | Last Report |
|---|---|---|
| Jackson | 1 | 2026-03-03 |
| St. Louis | 1 | 2026-09-17 |
County-level data from JHU Measles Tracking Team, limited here to reports dated in 2026. These approximate tracker rows do not reconcile to the linked official dashboard’s locality table.
MMR Vaccination Coverage in Missouri
Kindergarten MMR coverage in Missouri is 90% — below the 95% herd immunity threshold needed to prevent measles outbreaks.
View Missouri MMR coverage details →Nearby States
Sources & Methods
Missouri Department of Health and Senior Services dashboard showed 11 confirmed measles cases in Missouri in 2026 when checked on Sep 29, 2026. Check the live page for changes.
The state dashboard observation supplies the lead count as checked. JHU separately compiles approximate state and county detail from public reports. County-level data may be incomplete. The CDC also publishes national measles case counts.Learn more about our methods.
More Health Data for Missouri
Best Next Clicks for Missouri
Useful next questions
Questions worth opening from the Missouri measles page
Use these pages when you need outbreak context, help interpreting a low case count, or measles information for travel.
Local Measles Question
Is There a Measles Outbreak Near Me?
A local measles routing page for outbreak and exposure searches, with a built-in measles finder and direct next clicks into state and travel pages.
Measles Interpretation
Should I Worry About a Single Measles Case in My State?
A trust-preserving measles interpretation page that helps users react proportionately and click into the right state page next.
Travel Question
Is Measles a Travel Risk Right Now?
A travel-focused measles page that tells users when measles belongs in the pre-trip checklist and where to click next.
Cities in Missouri
Health data available for these Missouri cities:
Frequently Asked Questions
How many measles cases has Missouri had in 2026?
Missouri Department of Health and Senior Services dashboard showed 11 confirmed measles cases in Missouri in 2026 when checked on September 29, 2026. The JHU tracker separately lists 2 in its approximate 2026 view. Counts may change as new cases are confirmed or reclassified.
Is there a measles outbreak in Missouri?
Missouri Department of Health and Senior Services dashboard showed 11 confirmed measles cases in Missouri in 2026 when checked on September 29, 2026. This page does not determine formal outbreak status. Check your local health department for outbreak-specific guidance and exposure notices.
What is the MMR vaccine and why does coverage matter?
The MMR vaccine protects against measles, mumps, and rubella. Measles is highly contagious and requires approximately 95% community vaccination coverage to achieve herd immunity — the threshold at which enough people are immune to prevent sustained transmission.
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.