Dengue in Puerto Rico
Country profile for Puerto Rico (Americas): official dengue surveillance data reported to WHO, analysed by the SENTINARA early-warning engine.
Key facts
- Puerto Rico reported 876 dengue cases from January to July 2026, -61.3% compared with the same period of 2025, according to WHO Global Dengue Surveillance.
- Deaths reported in 2026 to July: 2 (1 in the same period of 2025).
- In 2025, the last full year, Puerto Rico recorded 3,319 cases, an incidence of 104.2 per 100,000 people and a case fatality rate of 0.060%.
- SENTINARA early-warning level for July 2026: Normal, because cases are within the usual range for this time of year.
- Ensemble forecast: August 2026 about 73 cases (80% range 48 to 111); September 2026 about 79 cases (80% range 48 to 129); October 2026 about 91 cases (80% range 57 to 145). Backtest MAPE 26.1%, MASE 0.23.
- Cases usually peak in December (based on 10 complete years).
- The anomaly detectors flagged 18 months; the most recent was February 2025 with 389 cases.
- OpenDengue holds complete annual totals for Puerto Rico since 1960.
- Countries with a similar seasonal pattern: Jamaica, Venezuela, United States, Barbados, Dominican Republic.
Related pages
- Dengue in Jamaica
- Dengue in Venezuela
- Dengue in United States
- Dengue in Barbados
- Dengue in Dominican Republic
- Dengue in Ecuador
- Dengue in Peru
- Dengue in El Salvador
- Dengue in Grenada
- Dengue in Trinidad and Tobago
- Dengue in Costa Rica
Data updated 2026-10-31. Sources: WHO Global Dengue Surveillance; OpenDengue V1.3 (Clarke et al., 2025), doi:10.6084/m9.figshare.24259573; Dinas Kesehatan Kota Semarang; World Bank Open Data; NASA POWER.