- Measles 2025
- 35
- 0 in 2024
- Measles rank
- #13/ 51
- 1 = most cases nationally
- Pertussis 2025
- 346
- whooping cough
- Mumps 2025
- 1
- MMR-preventable
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The Return of the Preventable / State detail
Montana reported 35 measles cases in 2025 - ranked #13 of 51 states, against a national total of 2,026.