Rabies Diagnosis for Developing Countries
Author Information
Author(s): Dürr Salome, Naïssengar Service, Mindekem Rolande, Diguimbye Colette, Niezgoda Michael, Kuzmin Ivan, Rupprecht Charles E., Zinsstag Jakob
Primary Institution: Swiss Tropical Institute, Basel, Switzerland
Hypothesis
Can the direct rapid immunohistochemical test (dRIT) provide a reliable alternative to the gold standard DFA test for rabies diagnosis in Chad?
Conclusion
The dRIT is as reliable as the gold standard DFA for diagnosing rabies in fresh samples and is significantly cheaper, making it suitable for use in low-income countries.
Supporting Evidence
- The dRIT showed 100% agreement with the DFA in fresh samples.
- The dRIT is 10 times less expensive than the DFA test.
- Rabies incidence in N'Djaména was estimated at 1.71/1000 dogs per year.
- All suspicious animals brought to the laboratory were dead.
- 42 out of 48 suspicious animals tested positive for rabies.
Takeaway
A new test for rabies can tell if an animal is sick using a regular light microscope instead of an expensive one, which helps more people get tested.
Methodology
The study evaluated the dRIT by testing 35 fresh samples alongside the DFA test and conducted additional retests on stored samples.
Potential Biases
Potential bias in sample selection as only suspicious animals with clear symptoms were brought for testing.
Limitations
The study's results may not be generalizable due to the limited sample size and the specific conditions of the tests.
Participant Demographics
The study involved domestic animals (dogs, cats) and included data on 90 people bitten by rabid dogs, with a significant number being children.
Statistical Information
Confidence Interval
95% C.I. 1.45–1.98
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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