From Reaction to Prevention: Rethinking Dengue Control in Urban India

India’s public health landscape has evolved significantly over the years. Today, much greater emphasis is placed on preparing for health risks rather than merely reacting to them. However, efforts against vector-borne diseases like dengue and fever continues to be inconsistent with this idea prevention efforts tend to be spontaneous and responsive rather than continuing and preventative.

Globally, mosquito-borne diseases kill more than one million people and infect up to 700 million each. Dengue has become hyper-endemic in the country. According to the report by National Center for Vector Borne Diseases Control (NCVBDC), as of September 17, 2023, 94,198 cases of dengue infection were reported in India.

Mosquito breeding risks are rising each year, driven by climate change impacts and increasing urban density, which together are disrupting rainfall patterns and intensifying flooding. Despite increased awareness and coordinated mosquito control by public health agencies, prevention often focuses on peak transmission seasons. This raises an important question: can dengue prevention become less reactive and more preventive?

Moving the Conversation Upstream

Dengue management has traditionally focused on reducing adult mosquito populations once they become visible or disease incidence begins to rise. While these interventions continue to play an important role, increasing attention is being directed towards addressing the challenge earlier in the vector life cycle. This approach recognises a critical reality: stopping mosquito breeding early offers a more effective and sustainable defence against disease transmission.

Today’s urban environment presents multiple conditions that support mosquito proliferation. Stagnant water in construction zones, rooftops, coolers, household containers, drains and neglected community spaces quickly become breeding habitats. These factors, combined with increasing population density and changing environmental conditions, highlight the need for earlier and more consistent intervention.

From Outbreak Response to Preventive Action

Building a stronger resilience against dengue requires multi-pronged approach. With changes occurring in the way that the disease spreads, there are increasing dependencies on environmental management, collective public awareness and innovation through science to assist in the prevention of dengue.

Effective prevention is becoming more dependent on the collaboration of scientific innovation, environmental management, and public awareness as disease patterns continue to change. This logic has also influenced a shift to more integrated vector management solutions that are focused not only on addressing outbreaks but also on the mitigation of risk at its source.

Beyond traditional prevention methods, there is a growing emphasis on new strategies to reduce mosquito populations earlier in their development cycle. Examples include naturally derived active ingredients from fermentation-based methods and a broader trend towards more targeted public health practices. However, creating lasting impact requires more than just innovation; it needs responsible water management practices and continued public participation to build healthier communities.

By Subrata Pal, Head – Fumigant Business & Public Health Business, UPL SAS