Malaria: Reporting and Surveillance

Malaria is a category II reportable condition in Wisconsin. Health care providers and laboratories should report to the patient's local public health department:

Reporting should be completed within 72 hours upon recognition of a case. For more information, please visit the Department of Health Services Disease Reporting page.

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 Guidance Resources

Surveillance Resources
Provider Resources

Malaria Diagnosis and Treatment in the United States: Information on malaria diagnosis and treatment from CDC.

Wisconsin Malaria Data: Department of Health Services charts with data from 2009 through 2018.


Laboratory criteria for confirmation:
  • Detection of malaria parasites in thick or thin peripheral blood films by microscopy.
  • Detection of species-specific DNA in samples of peripheral blood by PCR.

Note: Detection of circulating malaria-specific antigens using rapid diagnostic test (RDT) is only a screening test and malaria species need to be confirmed by another test.


A fast and accurate diagnosis of malaria is very important to properly treat the patient and prevent further spread of malaria. A patient's clinical signs and symptoms and travel history can help to inform a preliminary diagnosis prior to laboratory confirmation. For more information on malaria diagnosis, visit the CDC Malaria Diagnosis (United State) page.


Treatment should be started as soon as malaria is suspected. For information and guidelines on treatment, visit the CDC Malaria Treatment (United States) page.

Questions about illnesses spread by mosquitoes? Contact us!
Phone: 608-267-9003 | Fax: 608-261-4976

Last Revised: February 22, 2021