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Clinical and serologic responses to human 'apathogenic' trypanosomes
1Swiss Tropical Institute, Department of Medical and Diagnostic Services, Basel. johannes.blum@unibas.ch
Summary
A benign febrile illness with positive Trypanosoma brucei serology resolved spontaneously. Human African Trypanosomiasis (HAT) was excluded, but infection with other trypanosome species is considered.
Area of Science:
- Medical Parasitology
- Tropical Medicine
- Immunology
Background:
- Human African Trypanosomiasis (HAT) presents with diverse clinical manifestations.
- Accurate diagnosis is crucial for effective treatment and public health.
- Serological testing plays a key role in diagnosing trypanosome infections.
Observation:
- A female patient presented with a self-limiting febrile illness.
- Clinical symptoms mimicked Human African Trypanosomiasis (HAT).
- Strongly positive serology for Trypanosoma brucei was detected.
Findings:
- Human African Trypanosomiasis (HAT) caused by T. b. gambiense and T. b. rhodesiense was ruled out through specific diagnostic tests.
- The patient's symptoms resolved spontaneously without specific antiparasitic treatment.
- The possibility of infection with non-pathogenic trypanosome species (e.g., T. b. brucei, T. congolense, T. vivax) was considered.
Implications:
- This case highlights the importance of considering differential diagnoses in suspected HAT cases.
- Benign, self-resolving febrile illnesses with positive trypanosome serology can occur.
- Further investigation into the pathogenicity and serological cross-reactivity of various trypanosome species is warranted.