Overview
- Kane County health officials confirmed the second linked measles case on Wednesday and said the new patient was a vaccinated contact of the first case.
- The index patient was unvaccinated and was infectious during a full school day at Kaneland High School on Aug. 18 and during a clinic visit to Next Generation Pediatric Clinic on Aug. 24.
- Officials are contacting people known to have been exposed to the second patient, have not identified any public exposure sites tied to that case, and maintain quarantine orders for unvaccinated exposures.
- Health authorities stressed that the MMR vaccine provides strong protection but that rare breakthrough infections can occur and vaccinated people who get measles are usually less likely to be severely ill or to transmit the virus.
- The local cluster is being tracked against a larger regional surge, including more than 100 cases reported in parts of southwestern Wisconsin, and officials warn that low vaccination pockets are driving renewed spread.