Oklahoma surgeons were forced to amputate a 40-year-old woman's arms and legs to save her from an aggressive infection caused by a tick bite.

CNN reports the operation was necessary to save Jo Rogers' life from what is believed to be the worst case of Rocky Mountain Spotted Fever ever reported.

Rogers' case may be rare, but tick-borne infections are not.

Few people die from Rocky Mountain Spotted Fever, which can be treated with antibiotics. But treatment should start in the first five days of infection and Rogers apparently started treatment later than that.