In 2023, the number of reported Japanese Encephalitis cases in Japan was 7. The forecast for 2024 and 2025 remains constant at 7 cases each year. A slight increase is observed beginning in 2026, with projections indicating 8 cases annually through 2028. These forecasts suggest a stable trend with minimal fluctuation, showing a year-on-year growth of approximately 14.3% from 2025 to 2026 and no change from 2026 to 2028. The compound annual growth rate (CAGR) over the five years indicates a minor overall increase in cases.
Future trends to watch for include:
- Potential impacts of new vaccination strategies and public health policies.
- Environmental changes that may affect mosquito populations.
- Improvements in diagnostic and reporting accuracy for better monitoring.
