Japanese Encephalitis Surveillance in Bali, Indonesia
Author Information
Author(s): Kari Komang, Liu Wei, Gautama Kompiang, Mammen Mammen P Jr, Clemens John D, Nisalak Ananda, Subrata Ketut, Kim Hyei Kyung, Xu Zhi-Yi
Primary Institution: Udayana University School of Medicine, Bali, Indonesia
Hypothesis
Is Japanese encephalitis more prevalent in Bali than previously thought?
Conclusion
The study found that Japanese encephalitis incidence and case-fatality rates in Bali are comparable to those in other endemic countries, indicating a broader geographical range of the disease.
Supporting Evidence
- 86 confirmed and 4 probable cases of Japanese encephalitis were identified.
- The annualized JE incidence rate was 7.1 per 100,000 for children under 10 years.
- 70% of cases occurred during the rainy season.
Takeaway
Japanese encephalitis is more common in Bali than people thought, and many kids get sick from it every year.
Methodology
The study involved hospital-based surveillance of children under 12 years with acute viral encephalitis or aseptic meningitis over 2.5 years.
Potential Biases
Potential bias due to reliance on hospital data, which may not capture all cases.
Limitations
The study may have underestimated the true incidence of JE due to missed cases that did not seek medical attention.
Participant Demographics
Children under 12 years of age in Bali, Indonesia.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% CI, 3.6–10.5 per 100,000
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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