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Neuro-leptospirosis - A batty diagnostic enigma.
Lauren Nguyen1, Timothy Chimunda1,2,3,4
1Mackay Base Hospital, Queensland Health, Queensland, Australia.
Idcases
|March 20, 2023
Summary
Leptospirosis, a global zoonotic disease, can cause severe illness. This report details a rare case of neuro-leptospirosis from bat exposure, presenting with subarachnoid hemorrhage.
Area of Science:
- Infectious Diseases
- Zoonotic Diseases
- Neurology
Background:
- Leptospirosis is a widespread zoonotic illness prevalent in tropical regions.
- It presents with diverse clinical manifestations, ranging from mild febrile illness to severe multi-organ dysfunction.
- Transmission usually occurs via contact with infected animal urine, primarily from livestock and rodents.
Observation:
- Leptospira species are found in bats, but human transmission and associated illness are rarely documented.
- This study presents a unique case of severe neuro-leptospirosis in a human following bat exposure.
- The patient exhibited an unusual, non-traumatic subarachnoid hemorrhage as a manifestation of the infection.
Findings:
- The case highlights a rare instance of bat-to-human transmission of Leptospira.
- Severe neuro-leptospirosis was diagnosed, complicated by a non-traumatic subarachnoid hemorrhage.
- The diagnostic process for this unusual presentation posed significant challenges.
Implications:
- This case expands the known spectrum of clinical presentations for leptospirosis.
- It underscores the potential for bats as a reservoir for Leptospira, necessitating further investigation into bat-human transmission routes.
- Clinicians should consider leptospirosis in patients with neurological complications, even with unusual exposure histories.

