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The Return of the Preventable / State detail

California

California reported 48 measles cases in 2025 - ranked #7 of 51 states, against a national total of 2,026.

Measles 2025
48
15 in 2024
Measles rank
#7/ 51
1 = most cases nationally
Pertussis 2025
1,703
whooping cough
Mumps 2025
53
MMR-preventable
Measles MMR
Measles 2022: 0 cases 0 2022 Measles 2023: 3 cases 3 2023 Measles 2024: 15 cases 15 2024 Measles 2025: 48 cases 48 2025
Pertussis DTaP / Tdap
Pertussis 2022: 84 cases 84 2022 Pertussis 2023: 196 cases 196 2023 Pertussis 2024: 1,775 cases 1,775 2024 Pertussis 2025: 1,703 cases 1,703 2025
Mumps MMR
Mumps 2022: 14 cases 14 2022 Mumps 2023: 55 cases 55 2023 Mumps 2024: 28 cases 28 2024 Mumps 2025: 53 cases 53 2025
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