Hematology

Borrelia recurrentis in Peripheral Blood Smear

Morphology of Borrelia recurrentis in a blood smear. Diagnosis of the relapsing fever pathogen, spirochete transmission, and clinical manifestations.

Blood smear: Borrelia recurrentis spirochete (arrow) among red blood cells
Blood smear: Borrelia recurrentis spirochete (arrow) among red blood cells

BORRELIA OF RELAPSING FEVER IN A BLOOD SMEAR. Accidental detection of Borrelia recurrentis in a patient initially suspected of malaria. Borrelia recurrentis is transmitted by lice and ticks and is the causative agent of relapsing fever. Like malaria, relapsing fever is often a travel-related disease that, after an incubation period of up to 2 weeks, leads to episodes of fever.

👉🏻The causative agent of epidemic relapsing fever is Borrelia recurrentis, discovered by O. Obermeier (1868); its etiological role was confirmed by G.N. Minkh and I.I. Mechnikov in self-infection experiments.