Relapsing Fever

Disease Information

Relapsing fever is spread to humans by the bites of soft-bodied ticks or human body lice. The illness is caused by the bacteria Borrelia, and is characterized by a recurring fever.

Disease Reporting

What is required?

For Health Care Providers and Clinical Laboratories

Health care providers and clinical laboratories are required by law to report cases and suspect cases of relapsing fever within one working day upon identification. Call 971-673-1111 to reach the state health department doctor on call.

Health care providers: Use our secure web-based confidential reporting system – OR – use the confidential PDF reporting form.
See How and Where to Report for more information and local health department contacts.

For Local Health Departments

CDC Rickettsial Tick-borne Diseases Case Report Form (pdf)

For reportable diseases lacking Oregon-specific investigative guidelines or case report forms, please contact the state epidemiologist on call for assistance at 971-673-1111.