Story perspectives

Maryland declares measles outbreak, tally reaches 31 cases

8/25/2026

Summary

Maryland Health Outbreak

Maryland Department of Health declares a measles outbreak in Carroll, Cecil and St. Mary’s counties.
The outbreak brings Maryland’s 2026 measles total to 31 cases, including 27 since July 15.
Cases are concentrated in St. Mary’s (13), Carroll (8), Cecil (5) and Charles (1) counties.
Most infections occurred among household contacts, indicating limited community transmission.
Unvaccinated individuals face about a 90% infection chance after exposure, officials say.

Summary

Illinois Traces Outbreak

Illinois health officials isolated the Kane County measles case and began contact tracing.
Wisconsin Department of Health Services urges residents to verify vaccination status via the Wisconsin Immunization Registry.
Kentucky’s kindergarten measles vaccination rate is 90.7%, below the 95% herd-immunity threshold.
Fresno County health educator promotes the California Immunization Registry (CAIR) to retrieve lost immunization records.

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Maryland Health Outbreak

Maryland Department of Health declares a measles outbreak in Carroll, Cecil and St. Mary’s counties.
The outbreak brings Maryland’s 2026 measles total to 31 cases, including 27 since July 15.
Cases are concentrated in St. Mary’s (13), Carroll (8), Cecil (5) and Charles (1) counties.
Most infections occurred among household contacts, indicating limited community transmission.
Unvaccinated individuals face about a 90% infection chance after exposure, officials say.

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