title: Common source outbreak of relapsing fever--California.
mesh_terms: D000368:Aged; D000818:Animals; D001898:Borrelia / Q000302:isolation & purification; D002140:California / Q000453:epidemiology; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D007303:Insect Vectors; D012061:Relapsing Fever / Q000453:epidemiology* / Q000382:microbiology; D013987:Ticks