Kane County Reports 2nd Measles Case of 2026, Connected to 1st Case, in Vaccinated Patient
Health officials said the vaccinated patient was a contact of an earlier case, and unvaccinated exposures remain under 21-day quarantine.
- Kane County Health Department officials identified a second measles case on Wednesday in a vaccinated resident, marking the fourth confirmed case in the county over 25 years.
- The initial case, reported in late August, involved an unvaccinated student at Kaneland High School in Maple Park who was infectious while attending school, resulting in up to 1,600 potential exposures.
- Although the MMR vaccine provides strong protection, breakthrough infections can occur, according to health officials; vaccinated patients typically experience less severe illness and are less likely to transmit the virus.
- Officials noted the second patient is now out of isolation with no public exposure sites flagged, though residents should monitor for symptoms like fever or rash for 21 days after potential exposure.
- Health officials are also tracking a separate measles outbreak in southwestern Wisconsin that has resulted in 151 confirmed cases, continuing to urge residents to verify vaccination status to prevent further spread.
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Chicago Sun Times
Usa news2nd measles case confirmed in Kane County
<p>A second measles case has been confirmed in Kane County weeks after the area's first confirmed case, according to health officials. </p><p>The person was vaccinated against measles and in contact with the first case, which was <a class="Link" href="https://chicago.suntimes.com/health/2026/08/25/measles-kane-county" target="_blank" >reported Aug. 24</a>, according to the Kane County Health Department. </p><p>While a vaccine protects against me…
Second measles case confirmed in Kane County involving vaccinated person
Health officials in Kane County have confirmed a new measles case as they work to contact those who may have been exposed. Michael Isaacson, executive director of the Kane County Health Department, said the newly confirmed case involves a vaccinated individual who was in contact with the county’s first case, reported in August. Both are [...]
Second measles case reported in Kane County
A second case of measles has been reported in Kane County. The latest person diagnosed with measles was in contact with the first individual, according to a news release from the Kane County Health Department.
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