Recurrent Fevers in a Triathlete.

Human granulocytic anaplasmosis (HGA) is a tick-borne illness that typically causes a self-limited febrile illness. We describe herein a healthy triathlete who had recurrent fevers for six weeks as a result of HGA and discuss the impact of this patient's HGA on his metabolic fitness during training over a three month time period. We also review the literature for other cases of Ehrlichia and Anaplasma with prolonged courses.