Current Year Data (2023)

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ArboNET is a national arboviral surveillance system managed by CDC and state health departments. ArboNET collects data on arboviral infections among people, veterinary animals, mosquitoes, dead birds, and sentinel animals.

These data are preliminary and subject to change. Data are current as of January 9, 2024Current season data are updated every week from May through December. Due to delays in reporting, state, territorial, and local health departments may have more up-to-date information than what is presented here.

*Total human disease cases includes neuroinvasive and non-neuroinvasive disease cases.