Communicable Disease Threats Report 2024
- Dengue fever is a widespread viral disease transmitted to humans through the bite of infected Aedes mosquitoes.
- Transmission: Aedes aegypti and, to a lesser extent, Aedes albopictus mosquitoes are the primary vectors responsible for spreading the dengue virus.
- The majority of dengue infections result in a febrile illness, characterized by high fever, severe headache, muscle and joint pain, rash, and sometimes mild bleeding.However, a small percentage...
Understanding Dengue Fever: A Global Health Concern
Table of Contents
Dengue fever is a widespread viral disease transmitted to humans through the bite of infected Aedes mosquitoes. As of September 26, 2025, dengue poses a significant public health challenge in numerous tropical and subtropical regions worldwide, including parts of the americas, Africa, Asia, and the Pacific Islands.
Symptoms and Severity
The majority of dengue infections result in a febrile illness, characterized by high fever, severe headache, muscle and joint pain, rash, and sometimes mild bleeding.However, a small percentage of cases progress to more severe forms of the disease, known as dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS).
Dengue hemorrhagic fever is characterized by increased permeability of blood vessels, leading to plasma leakage, hemorrhage, and potentially life-threatening shock. Without prompt medical intervention, severe dengue can be fatal. The world Health Institution (WHO) estimates that approximately 500,000 people are hospitalized with severe dengue each year globally.
Prevention and Control
Currently, there is no specific antiviral treatment for dengue fever. Management focuses on supportive care,including fluid replacement and pain relief. Prevention relies heavily on controlling mosquito populations and preventing mosquito bites.
Effective prevention strategies include:
- Eliminating mosquito breeding sites by removing standing water.
- Using mosquito repellents containing DEET, picaridin, or IR3535.
- Wearing long sleeves and pants, especially during peak mosquito activity hours.
- Using mosquito nets, especially while sleeping.
- Community-based mosquito control programs, such as insecticide spraying.
looking Ahead
Climate change and increasing urbanization are expected to expand the geographic range of Aedes mosquitoes, potentially increasing the risk of dengue outbreaks in new areas. Continued research and progress of new prevention and treatment strategies are crucial to mitigating the global burden of this debilitating disease.