Lyme Disease in Canada

In August 2019, a 75-year-old man presented to the emergency department in Winnipeg with a 6-week history of fever, myalgia, lethargy and 7-kg weight loss. After 3 weeks of symptoms, he had visited his family physician, who prescribed a 1-week course of amoxicillin–clavulanic acid. When the symptoms persisted despite antibiotic treatment, he went to a community emergency department, where the physician identified anemia and thrombocytopenia (Table 1). After this, an urgent outpatient computed tomography (CT) scan of his chest, abdomen and pelvis was unremarkable. The patient later presented to our emergency department with persistent symptoms, and we admitted him for further investigations.