WMJ : official publication of the State Medical Society of Wisconsin · 2025
A Case of Travel-Associated Tick-Borne Relapsing Fever in Wisconsin.
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Rockman Michael E, Almothafer Zaynab, Doucette Rylee, Robbins Daniel J, Scolarici Michael, Liu Manlu, Pepperell Caitlin S, Matkovic Eduard, Kenik Jordan
Аннотация
INTRODUCTION: Tick-borne relapsing fever is a zoonotic infection caused by members of the Borrelia genus of spirochetes found predominantly in the southwestern United States.
CASE PRESENTATION: A 65-year-old woman presented to a Wisconsin emergency department with a 2-day history of fevers and altered mental status after returning from a 5-week stay in Colorado. Initial labs were notable for elevated transaminases, thrombocytopenia, mild hyponatremia, mild hypokalemia, and elevated procalcitonin.
DISCUSSION: Rapid identification of patients with tick-borne relapsing fever is essential to minimize morbidity and mortality. Peripheral blood smear - especially during a febrile episode - can serve as a quick and accurate way to diagnose the illness with direct visualization of spirochetes.
CONCLUSIONS: Early analysis of a peripheral blood smear can lead to a swift diagnosis of tick-borne relapsing fever, particularly in nonendemic states such as Wisconsin.
CASE PRESENTATION: A 65-year-old woman presented to a Wisconsin emergency department with a 2-day history of fevers and altered mental status after returning from a 5-week stay in Colorado. Initial labs were notable for elevated transaminases, thrombocytopenia, mild hyponatremia, mild hypokalemia, and elevated procalcitonin.
DISCUSSION: Rapid identification of patients with tick-borne relapsing fever is essential to minimize morbidity and mortality. Peripheral blood smear - especially during a febrile episode - can serve as a quick and accurate way to diagnose the illness with direct visualization of spirochetes.
CONCLUSIONS: Early analysis of a peripheral blood smear can lead to a swift diagnosis of tick-borne relapsing fever, particularly in nonendemic states such as Wisconsin.