CDC NNDSS weekly tables · week 40 of 2026

Measles Cases by State 2026

CDC's weekly notifiable disease tables show 4,076 measles cases among US residents in 2026 through the week ending 10 October 2026, against 1,575 at the same point of 2025. 224 were reported that week. Most cases: Pennsylvania (1,161), South Carolina (686), Utah (532). CDC's measles page, updated separately, counts 4,410 confirmed cases this year.

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4,076
Cases, 2026 to week 40
1,575
Same point of 2025
224
Reported in week 40

By state and territory

State2026 to dateWeek 40Same point 2025
Pennsylvania1,16116716
South Carolina686—10
Utah532—59
Wisconsin190136
Virginia183—4
Texas178—803
Ohio158936
Kentucky1571513
Florida146—6
New York (excl. NYC)126308
Arizona123—67
California61—22
Oregon60—1
Washington58—11
Maryland53—2
Indiana27110
Minnesota24118
North Carolina20—0
Michigan17—28
New Mexico17—100
Colorado12—31
North Dakota11—36
South Dakota11—12
Tennessee9—7
New York City7—16
Maine6—0
Montana6—32
Kansas5—90
Illinois4—13
Georgia4—10
Idaho4—7
Connecticut3—0
Massachusetts2—0
Rhode Island2—1
Nebraska2—1
West Virginia2—0
Wyoming2—9
Vermont1—2
New Jersey1—11
Alabama1—1
Louisiana1—2
Oklahoma1—17
Alaska1—3
Hawaii1—2
New Hampshire0—0
Iowa0—8
Missouri0—6
Delaware0—0
District of Columbia0—0
Mississippi0—0
Arkansas0—8
Nevada0—0
American Samoa0—0
Commonwealth of Northern Mariana Islands0—0
Guam0—0
Puerto Rico0—0
U.S. Virgin Islands0—0

Imported and locally acquired cases added together. "—" = none reported that week.

If measles is near you

  • Two MMR doses protect about 97% of people; one dose about 93%. Adults unsure of their status can ask for a blood test or another dose.
  • Symptoms start 7–21 days after exposure: high fever, cough, runny nose, red eyes, then a rash spreading from the face down.
  • Call ahead before going to a clinic or ER, so staff can keep you away from babies and others at risk.
  • Your state or county health department lists exposure locations and free vaccine clinics.

What this page shows, and what it misses

Measles cases that states and territories reported to CDC's National Notifiable Diseases Surveillance System, from the most recent weekly table. The counts are provisional: late reports are added and some cases are reclassified, so they can trail CDC's measles page and state announcements by days or weeks. Cases are by the reporting jurisdiction, not where the infection happened. New York City reports separately from the rest of New York State.

Data: Centers for Disease Control and Prevention, NNDSS Weekly Data (data.cdc.gov) and CDC's measles case count — public domain U.S. Government work.