What is the Increase trend in Reported Cases of Dengue fever

What is the Increase trend in Reported Cases of Dengue fever

UN Health Agency Cites Tenfold Increase in Reported Cases of Dengue over the Last Generation

The World Health Organization (WHO), the health agency of the United Nations, has recently reported a significant rise in the number of dengue fever cases worldwide. According to their findings, there has been a tenfold increase in reported cases of dengue over the last generation.

What is Dengue Fever?

Dengue fever is a mosquito-borne viral infection that causes flu-like symptoms such as high fever, severe headache, joint and muscle pain, rash, and in some cases, can lead to a potentially fatal condition called severe dengue. The disease is transmitted by the Aedes mosquito, primarily the Aedes aegypti species.

The Global Impact

Dengue fever is endemic in more than 100 countries, mainly in tropical and subtropical regions. The WHO estimates that around 390 million dengue infections occur annually, with approximately 500,000 cases of severe dengue requiring hospitalization. The disease poses a significant public health burden, especially in countries with limited resources and inadequate healthcare systems.

The Tenfold Increase

The recent report by the WHO highlights the alarming rise in reported cases of dengue over the past generation. In the 1970s, only nine countries had experienced severe dengue outbreaks. Today, the number has increased to more than 100 countries, affecting populations across the globe.

Factors contributing to this tenfold increase include urbanization, population growth, increased international travel, and inadequate mosquito control measures. Climate change is also believed to play a role, as rising temperatures and changing rainfall patterns create more favorable conditions for mosquito breeding.

The Importance of Prevention and Control

Given the significant impact of dengue fever on public health, prevention and control measures are crucial. The WHO emphasizes the importance of integrated vector management, which includes reducing mosquito breeding sites, using insecticides, and promoting community awareness and participation.

Vaccination is another key strategy in dengue prevention. In recent years, the development of a dengue vaccine has provided hope for reducing the disease burden. However, the vaccine’s effectiveness varies depending on the individual’s previous exposure to different dengue virus serotypes, and its availability and affordability remain limited in many affected regions.


The tenfold increase in reported cases of dengue over the last generation is a concerning trend that demands immediate attention. Governments, healthcare organizations, and communities must work together to strengthen prevention and control efforts, improve healthcare infrastructure, and promote research and development for effective treatments and vaccines.

By addressing the underlying factors contributing to the spread of dengue, we can hope to reduce the disease burden and protect the health and well-being of populations worldwide.