5 Key Takeaways

• 1

  A case report details a 79-year-old man diagnosed with tick-borne anaplasmosis and acute myocarditis after presenting with fatigue and chills.

• 2

  Laboratory findings included lymphopenia, thrombocytopenia, and elevated liver enzymes, prompting consideration of tick-borne infections.

• 3

  A peripheral blood smear revealed intracytoplasmic morulae in neutrophils, leading to PCR confirmation of Anaplasma phagocytophilum.

• 4

  The patient developed acute myocarditis, confirmed by elevated troponin levels and imaging, but improved rapidly with doxycycline treatment.

• 5

  Anaplasmosis incidence is rising in Canada, and it should be considered in patients with unexplained febrile illness in endemic regions.