Westchester County has reported its first human case of West Nile Virus in 2025. This development is typical for the season, as mosquito activity increases during warmer months.
West Nile Virus is primarily transmitted between birds and mosquitoes. Humans may contract the virus through the bite of an infected mosquito, but it does not spread from person to person or from animals to people.
Most individuals who are infected with West Nile Virus do not experience symptoms. According to health authorities, about 80% of those infected will remain asymptomatic. For the remaining 20%, symptoms—often described as West Nile Fever—can include fever, headache, body aches, joint pain, vomiting, diarrhea, and rash. These symptoms typically appear two to fourteen days after being bitten by an infected mosquito.
Officials advise residents to be aware of these facts and take precautions against mosquito bites during the active season.
