Seneca County residents can check an online dashboard for county measles case data, vaccination information and guidance on what to do after a possible exposure.
The Seneca County Health Department's dashboard is updated weekly on Fridays and was labeled last updated Oct. 2 when reviewed Thursday evening.
The department's announcement directs residents to the dashboard and health-information image on its website's home page. The dedicated page brings the county's charts and prevention guidance together in one place.
What the dashboard reports
The Oct. 2 display listed 16 confirmed cases in 2026, with six new cases in its preceding seven-day reporting period. Three of the 16 cases involved hospitalization, or 18.8%.
Those are figures from the dated dashboard update, not a new Oct. 9 case count. The page says its data are refreshed each Friday.
The monthly chart recorded five cases in August and 11 in September. Its age chart grouped six cases as under 18 years old and 10 as over 18 years old.
All 16 cases were listed in the not-vaccinated category. The chart defines fully vaccinated as having received two doses of measles, mumps and rubella vaccine, or MMR.
A separate chart reported 135 MMR doses administered by Health Department staff in 2026. The monthly totals shown were one in January, five in February, two in May, 10 in June, 27 in July, 25 in August, 61 in September and four in October.
What residents should do
The department asks anyone who thinks they or a family member may have measles, or may have been exposed, to stay home and call a health care provider or the department right away at 315-539-1920.
Its health information describes measles as a highly contagious respiratory illness that can cause fever, rash and serious complications, including pneumonia and brain swelling. It spreads through the air and can remain in a room for up to two hours after an infected person leaves.
The page lists fever, cough, runny nose and red, watery eyes among early symptoms, followed by a rash. It says symptoms generally appear seven to 14 days after exposure, sometimes as late as 21 days, and an infected person can spread the virus from four days before the rash appears through four days afterward.
The department says two MMR doses are 97% effective at preventing measles. Residents unsure of their vaccination history can call their provider or the department to check their records.
The dashboard also links to measles information from the state Health Department and the Centers for Disease Control and Prevention, along with help locating older immunization records.
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