The first human case of West Nile virus in Delaware County for 2025 has been identified, the county's health department announced on Tuesday.

The Delaware County Health Department did not reveal the person's gender, age or where they live in the county.

Human cases of West Nile virus in Delco aren't uncommon and occur in most years, according to the health department. The number of human cases of West Nile virus previously peaked in 2012, 2018 and 2021, the health department said. Within the last five years, the highest number of human cases was 4, in 2021.

Fortunately, the majority of those who do get infected with West Nile virus don't develop any symptoms, the health department said. About 1 in 5 people infected develop a fever, headache, body aches, joint pains, vomiting, diarr

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