Tickborne relapsing fever (TBRF) is a bacterial disease transmitted to people by soft ticks in the genus Ornithodoros. TBRF is a rare disease in California with between 1 and 8 cases reported per year, generally during the summer months. People are at risk of contracting TBRF when they sleep in rustic mountain cabins that are infested with wild rodents. The soft ticks that transmit TBRF feed rapidly; most people who contract TBRF have no recollection of a tick bite.
For more information on Tickborne relapsing fever, please visit the California Department of Public Health website: http://www.cdph.ca.gov/healthinfo/discond/Pages/Tick-BorneRelapsingFever.aspx