What are the current epidemiologic trends of Dengue in U.S. Territories?
Dengue is a mosquito-borne virus that causes fever, severe headache, and joint pain. In recent years, the number of cases in U.S. Territories has increased. This rise is linked to factors like climate change, urbanization, and population growth that help mosquitoes spread the virus faster 1.
What the research says
Surveillance data from 2010 to 2020 shows a clear upward trend in dengue cases across U.S. Territories 5. This increase was not limited to the territories themselves; travel-associated dengue cases in the mainland United States also rose in 2019 compared to previous years 6.
Puerto Rico experienced a specific outbreak in 2024 that was severe enough to trigger a local public health emergency 4. A dedicated surveillance system is used to track these trends in Puerto Rico to help manage the outbreak 7.
While the Global Burden of Disease Study provides broad data on health issues worldwide, specific reports for 2023 noted increases in dengue in neighboring Peru, highlighting the regional nature of these outbreaks 39.
What to ask your doctor
- How can I reduce my risk of getting dengue while traveling to or living in a U.S. Territory?
This question is drawn from common patient questions about Infectious Disease and answered using cited medical research. We do not provide individualized advice.