A New York resident contracted the first confirmed human case of Eastern equine encephalitis in the state in nearly a decade and has died, the governor’s office announced this week. So what exactly is the mosquito-borne disease EEE or Triple E?

The person died in Ulster County after being infected with the EEE virus that spreads from horses to humans via mosquito bites.

Mosquitoes infected with eastern equine encephalitis will threaten residents until temperatures cool down, health officials warn