8th July 2023

A 53-year-old male with a background of diabetes presents with an expanding erythematous rash on his right arm

A 53-year-old male with a background of diabetes presents with an expanding erythematous rash on his right arm and associated lethargy. On examination, he has a low grade fever and a 5cm round erythematous patch with central clearing. He reports that he went on a camping trip in Exmoor 2 weeks ago. You suspect Lyme disease. What is the most prevalent Borrelia subspecies in the UK?

Select the SINGLE most appropriate option from the list below. Select ONE option only.