Wyoming Measles Cases in 2026
Last updated:
Is there a measles outbreak in Wyoming? This page tracks confirmed measles cases in Wyoming for 2026, updated weekly with data from the Johns Hopkins Measles Tracking project. See how Wyoming compares to other states and check local MMR vaccination rates.
confirmed in Wyoming in 2026
As of 2026-04-03
Key Takeaways
- 1 No confirmed measles cases have been reported in Wyoming in 2026.
- 2 Fremont has the most cases with 5 confirmed.
- 3 Nearby states South Dakota, Nebraska, Colorado have also reported cases.
CDC Recommendations at This Level
No measles cases — verify your vaccination status
- • Make sure you and your family have received 2 doses of the MMR vaccine
- • Check with your doctor if you're unsure of your vaccination history
- • International travelers should verify MMR status before trips — measles is common in many countries
This is general public health guidance based on CDC recommendations — not personal medical advice. Talk to your healthcare provider about what's right for you and your family.
County Breakdown — Wyoming
| County | Cases | Last Report |
|---|---|---|
| Fremont | 5 | 2025-12-18 |
| Carbon | 4 | 2025-08-26 |
| Natrona | 1 | 2025-07-01 |
| Niobrara | 1 | 2025-07-11 |
| Park | 1 | 2025-12-19 |
County-level data from JHU Measles Tracking Team. Some counties may have additional unreported cases.
MMR Vaccination Coverage in Wyoming
Kindergarten MMR coverage in Wyoming is 93.6% — below the 95% herd immunity threshold needed to prevent measles outbreaks.
View Wyoming MMR coverage details →Nearby States
Sources & Methods
Measles case counts are compiled by the JHU Measles Tracking Team from state and local health department reports. County-level data may be incomplete. The CDC also publishes national measles case counts. Learn more about our methods .
More Health Data for Wyoming
Frequently Asked Questions
How many measles cases has Wyoming had in 2026?
Wyoming has reported 0 confirmed measles cases in 2026 as of the most recent data update. This count may change as new cases are confirmed or reclassified.
Is there a measles outbreak in Wyoming?
Based on the latest data, Wyoming does not have any active measles outbreaks reported. However, individual cases may still occur.
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. View Wyoming MMR coverage data .
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.