measles Outbreak in the United States – December 2025 Update
As of December 2nd, 2025, the United States is experiencing a important measles outbreak. The Centers for Disease Control adn Prevention (CDC) reports 1,798 confirmed measles cases across 43 U.S. jurisdictions as of November 25th, 2025. This represents the highest number of cases reported in several years, signaling a concerning resurgence of the disease.
The majority of thes cases – 87% – are linked to 46 ongoing outbreaks. A substantial 92% of individuals infected with measles were unvaccinated, highlighting the critical importance of vaccination in preventing the spread of this highly contagious disease.
The impact of the outbreak extends beyond infection, with 12% of cases requiring hospitalization. Tragically, three deaths have been confirmed consequently of measles complications.
Affected Jurisdictions:
Measles cases have been reported in the following states and cities: Alabama,Alaska,Arizona,Arkansas,California,colorado,Florida,Georgia,Hawaii,Idaho,Illinois,Indiana,Iowa,Kansas,Kentucky,Louisiana,Maryland,Michigan,Minnesota,Missouri,Montana,Nebraska,Nevada,New Jersey,new Mexico,New York City,New York State,North Dakota,Ohio,Oklahoma,Oregon,Pennsylvania,Rhode Island,South Carolina,South dakota,Tennessee,Texas,Utah,Vermont,Virginia,Washington,Wisconsin,and Wyoming.
CDC Recommendations:
The CDC continues to urge individuals to review their vaccination status and receive the measles, mumps, and rubella (MMR) vaccine.Two doses of the MMR vaccine are approximately 97% effective in preventing measles. The CDC also recommends that international travelers ensure they are adequately vaccinated before traveling abroad. More details on measles, including vaccination guidelines and outbreak updates, can be found on the CDC website: https://www.cdc.gov/measles/index.html.
Analysis & Keyword Definition:
* Primary Topic: Measles Outbreak in the United States
* Primary Keyword: Measles outbreak
* Secondary Keywords: MMR vaccine, measles cases, CDC measles, measles symptoms, measles prevention, vaccination, public health, disease outbreak, unvaccinated, measles complications.
Verification & Updates:
The original source material was verified against the CDC website as of December 2nd, 2025. The numbers reported in the original text were consistent with the CDC’s data as of November 26th, 2025. The link to the CDC’s measles page was updated to the current main measles information page.
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