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ArboNET is the national arboviral surveillance system managed by CDC and state health departments. In addition to human disease, ArboNET maintains data on arboviral infections among presumptive viremic blood donors, veterinary disease cases, mosquitoes, dead birds, and sentinel animals.

As with other national surveillance data, ArboNET data have several limitations that should be considered in analysis, interpretation, and reporting.

ArboNET is a passive surveillance system. It is dependent on clinicians considering the diagnosis of an arboviral disease and obtaining the appropriate diagnostic test, and reporting of laboratory-confirmed cases to public health authorities. Diagnosis and reporting are incomplete, and the incidence of arboviral diseases is underestimated.

Provisional ArboNET data are provided to help track recent arboviral disease activity. However, these data may change substantially before they are finalized. Provisional data from the current year should not be combined with or compared to final data from previous years.

The ArboNET disease maps have been retired. To locate current and historical data for arboviral diseases, please visit the disease webpage you’re interested in by using the links below.

Mosquito-borne Diseases

Tickborne Diseases