Dengue fever has become the most significant mosquito-borne viral disease in the world, with a staggering 390 million infections reported globally each year, a majority of them occurring in tropical and subtropical regions. According to the World Health Organization (WHO), nearly half of the world’s population is at risk, and over 129 countries are affected. The Americas, South-East Asia, and the Western Pacific are the hardest hit, with Asia alone accounting for more than 70% of the global burden. Rising temperatures and altered rainfall patterns due to climate change are expanding mosquito habitats and extending breeding seasons, contributing to the increase in dengue cases worldwide. As per the National Center for Vector Borne Diseases Control (NCVBDC) nearly 2.89 lakh infections and almost 485 deaths were reported in India in 2023 with states like West Bengal (30,683 cases), Bihar (20,224 cases), Karnataka (19300 cases) and Delhi (16,866 cases) being most severely affected. This major global health concern requires a multipronged approach for effective prevention and management.

Overview of Dengue

Dengue is a mosquito-borne viral disease caused by the dengue virus (DENV), a member of the Flavivirus genus. The disease is transmitted primarily through the bites of infected female Aedes aegypti and Aedes albopictus mosquitoes. They are small mosquitoes, black in colour with white stripes, and measure around 3-5 mm in size. Once infected, it takes about 7 to 8 days to develop the virus in their body and start transmitting the disease. Aedes mosquitoes are active during the day and primarily feed on humans in and around homes. They are persistent feeders, often biting multiple people during one blood meal. These mosquitoes prefer to rest in dark areas inside homes, such as corners, under furniture, or on hanging items like clothes and umbrellas. Aedes mosquitoes breed just above the surface of the water, in small collections of water, commonly found in man-made or storage containers. Remarkably, their eggs can survive for over a year without water, waiting for suitable conditions to hatch.

The dengue virus has four serotypes (1 to 4), which provide limited cross-protection, making it possible for individuals to be infected multiple times. Dengue typically starts abruptly after an incubation period of 4 to 7 days. Symptoms of dengue include high fever, low platelets, severe headache, joint and muscle pain, rash, nausea, and mild bleeding. In severe cases, it can lead to dengue hemorrhagic fever or dengue shock syndrome, with symptoms like plasma leakage, organ failure, and internal bleeding, which can be fatal. Dengue severity varies by age with children and elderly populations experiencing more severe outcomes like dengue hemorrhagic fever and organ dysfunction due to weaker immune systems and underlying conditions.

There is no specific treatment for dengue and its management involves fluid replacement and medications to provide relief from fever and pain. Preventing dengue involves controlling mosquito populations and avoiding bites. Key measures include eliminating breeding sites by emptying containers that collect water, ensuring proper drainage holes in flower pots to prevent water accumulation, covering stored water, clearing clogged drains, and using larvicidal treatments. Personal protection involves using insect repellents, wearing clothing that covers all the body parts, and sleeping under mosquito nets. Community efforts, such as insecticide distribution, use of biological control like larvivorous fish and public awareness campaigns, help reduce mosquito populations. Health education and community participation are essential for effective dengue prevention.

Nutritional Management of Dengue

Nutrition plays a vital role in managing dengue by supporting recovery and enhancing immunity. A well-balanced diet helps maintain hydration, improve platelet count, and reduce the risk of complications.

Hydration: Dengue causes significant dehydration due to fever and vomiting. Patients should consume plenty of fluids, including water, oral rehydration solutions (ORS), coconut water, fresh citrus juices, and soups. Coconut water, rich in potassium, helps restore electrolyte balance.

Immunity-Boosting Foods: A diet rich in fruits, vegetables, and proteins is essential. Foods like pomegranates, apples, oranges, spinach, and beetroot offer a combination of vitamins A, C, B9, manganese, and iron, which boost immunity and prevent anemia. Probiotic-rich foods can further enhance gut health and immunity.

Traditional Remedies: Certain natural remedies like Carica papaya leaf juice are believed to help increase platelet count and reduce hospitalization time. Other herbs, such as Tinospora cordifolia (giloy) and Andrographis paniculata (green chiretta), have shown antiviral properties and may be beneficial for dengue patients. However, their effectiveness is not universally proven hence, it’s necessary to consult a doctor before use.

Role of Informatics in Dengue Management

Health informatics is revolutionizing dengue prevention and control by using data analytics, predictive modeling, and real-time reporting to enhance surveillance, response, and public awareness.

  1. Predictive Modeling and Early Warning Systems – Informatics tools such as Singapore’s Dengue Early Warning System (DEWS) use historical data, weather conditions, and mosquito surveillance to predict outbreaks. This proactive approach enables timely interventions, reducing the incidence of dengue.
  2. Mobile and Community-Based Tools – Mobile health (mHealth) initiatives, like those in the Philippines, allow individuals to report suspected cases via SMS or apps. These platforms facilitate rapid data collection, enabling authorities to target high-risk areas with vector control measures and community awareness campaigns.
  3. Integrated Surveillance Systems – Countries like Brazil and India have developed integrated health informatics systems for real-time dengue case reporting. These systems help streamline communication among healthcare providers, public health authorities, and communities, improving the efficiency of outbreak responses.

India’s Integrated Vector Management program uses health informatics to monitor high-risk zones and mobilize resources. Efforts like National Dengue Day (16th May) raise public awareness, while the National Vector Borne Diseases Control Programme (NVBDCP) coordinates nationwide strategies for prevention and control.

Conclusion

The fight against dengue requires a collaborative approach that combines personal and community-led prevention measures, nutritional support, and the power of health informatics.
By combining technological innovation with traditional public health measures, we can effectively manage and prevent dengue outbreaks, ensuring better health outcomes for all.
With this we can achieve our broader goals of reducing healthcare costs, and contribute to the broader goal of controlling vector-borne diseases worldwide.

References

  • https://www.who.int/news-room/fact-sheets/detail/dengue-and-severe-dengue
  • Banerjee S. Importance of proper nutrition in dengue infections. IP J Nutr Metab Health Sci 2022;5(4):140-142.
  • Ahmed, S., Finkelstein, J. L., Stewart, A. M., Kenneth, J., Polhemus, M. E., Endy, T. P., Cardenas, W., & Mehta, S. (2014). Micronutrients and dengue.
  • The American journal of tropical medicine and hygiene, 91(5), 1049–1056. https://doi.org/10.4269/ajtmh.14-0142
  • Tewari, D., Jain, G. K., & Kumar, A. (2024). A systematic review and meta-analysis of some traditional Indian remedies against dengue. Discover Medicine, 1(1), 39.
  • https://iris.who.int/bitstream/handle/10665/75303/9789241504034_eng.pdf
  • https://ncvbdc.mohfw.gov.in/index4.php?lang=1&level=0&linkid=440&lid=3717
  • https://ncvbdc.mohfw.gov.in/WriteReadData/l892s/Dengue-National-Guidelines-2014.pdf
  • https://pib.gov.in/PressReleasePage.aspx?PRID=2045090