Combatting Malaria, Dengue, and More: The National Vector-borne Disease Control Programme

Every year, millions of people in India fall ill from diseases carried by mosquitoes and other insects. Malaria, dengue, chikungunya, kala-azar, Japanese encephalitis, and lymphatic filariasis – these are not just medical terms but real threats that affect families, communities, and the country’s economy. To tackle these diseases in a structured and coordinated way, the Government of India established the National Vector Borne Disease Control Programme (NVBDCP). This programme serves as the central framework for preventing, controlling, and ultimately eliminating vector-borne diseases across the country.

What are vector-borne diseases? 🔗

Vector-borne diseases are illnesses caused by parasites, viruses, or bacteria that are transmitted to humans through the bites of infected organisms – primarily mosquitoes, but also sandflies, ticks, and certain other insects. These organisms are called vectors because they carry and transfer the disease-causing pathogens from one host to another.

In India, the major vector-borne diseases include malaria (caused by Plasmodium parasites transmitted by Anopheles mosquitoes), dengue and chikungunya (spread by Aedes aegypti mosquitoes), kala-azar or visceral leishmaniasis (transmitted by sandflies), Japanese encephalitis (spread by Culex mosquitoes), and lymphatic filariasis (transmitted by various mosquito species). These diseases are prevalent in both rural and urban areas, mostly among lower socio-economic groups, the marginalized, and disadvantaged populations. Children, young adults, pregnant women, and economically productive groups are the most vulnerable, though all age groups can be affected.

Why do these diseases demand coordinated control? 🔗

Vector-borne diseases are not just a health issue – they have deep economic implications. The national malaria burden alone has been estimated at approximately US$1,940 million annually, with household out-of-pocket costs and lost productivity of 2-4 days per infection adding up significantly. Dengue outbreaks can overwhelm healthcare systems within days, as seen during the 2015 outbreak when India recorded 99,913 dengue cases and 220 deaths, throwing healthcare facilities into disarray and creating widespread public panic. The sheer geographic scale of India, its tropical climate, rapid urbanisation, and monsoon patterns all create ideal conditions for mosquito breeding. No single intervention – whether spraying insecticides, distributing bed nets, or treating patients – is enough on its own. A centralised, multi-pronged approach is essential.

The NVBDCP: origins and structure 🔗

India’s fight against vector-borne diseases has a long history. The National Malaria Control Programme (NMCP) was first established in 1953, and it was later converted into the National Malaria Eradication Programme (NMEP) in 1958. Over the decades, as other vector-borne diseases gained prominence, the government recognised the need for a unified programme. In 2002, the malaria control programme and other vector-borne disease programmes for kala-azar, dengue, lymphatic filariasis, Japanese encephalitis, and chikungunya were merged into the National Vector Borne Disease Control Programme (NVBDCP).

The programme is administered by the National Center for Vector Borne Diseases Control (NCVBDC) under the Ministry of Health and Family Welfare, Government of India. The NCVBDC functions as the central nodal agency for policy recommendations and technical guidelines, while state governments serve as the primary implementing agencies. At the state level, each state has a vector-borne disease control unit under the Directorate of Health Services. At the district level, 565 District Malaria Units are responsible for planning and monitoring, while 22,975 Primary Health Centres and over 1,37,000 sub-centres serve as the grassroots delivery points for healthcare services.

Programme strategies: how the NVBDCP works 🔗

The NVBDCP uses a comprehensive, multi-layered strategy to combat vector-borne diseases. These strategies broadly fall into three areas: disease management, vector control, and community engagement.

Early diagnosis and prompt treatment 🔗

One of the programme’s core principles is the early detection of cases through both Active Case Detection (health workers going door-to-door in endemic areas) and Passive Case Detection (screening patients who visit health facilities with fever). Several diagnostic tools have been introduced over the years: monovalent rapid diagnostic tests (RDTs) for P. falciparum in 2005, artemisinin-based combination therapy (ACT) in 2006, long-lasting insecticidal nets (LLINs) in 2009, and bivalent RDTs for both P. falciparum and P. vivax detection in 2013. For dengue, the programme has established a network of Sentinel Surveillance Hospitals equipped with laboratory support for quality-assured diagnosis, free of cost.

Integrated vector management 🔗

Integrated Vector Management (IVM) is at the heart of the NVBDCP’s prevention strategy. Rather than relying on a single method, IVM combines multiple approaches to reduce mosquito populations and interrupt disease transmission. These include:

Indoor Residual Spraying (IRS) – spraying insecticides on the inner walls of houses in high-risk areas to kill mosquitoes that rest on these surfaces. Long-Lasting Insecticidal Nets (LLINs) – distributing treated bed nets to populations in endemic regions to provide a physical and chemical barrier against mosquito bites. Larval source management – reducing mosquito breeding by eliminating stagnant water, using larvivorous fish in water bodies, and applying larvicides. Environmental management – improving drainage, sanitation, and water storage practices to remove mosquito breeding habitats. These IVM strategies, particularly IRS and LLIN distribution, have significantly curtailed mosquito populations and disrupted the transmission cycle across India’s high-burden states.

Community education and behaviour change 🔗

No disease control programme can succeed without the active participation of the people it aims to protect. The NVBDCP employs a detailed Information, Education, and Communication (IEC) strategy – also called Behaviour Change Communication (BCC) – to reach communities. This includes multimedia messaging through print media, electronic media, interpersonal communication, and folk media to raise awareness about vector-borne diseases and their prevention.

At the grassroots level, Accredited Social Health Activists (ASHAs) play a critical role. These frontline workers have been instrumental in early case detection, administering rapid diagnostic tests, providing initial treatment, and educating communities in remote and hard-to-reach areas. The involvement of ASHAs has been one of the significant contributors to the decline of malaria in tribal and rural regions.

Infrastructure improvements and surveillance 🔗

The programme has invested heavily in strengthening India’s disease surveillance infrastructure. The National Strategic Plan for Malaria Elimination (2023-2027) introduced enhanced surveillance, prompt case management through a “testing, treating, and tracking” approach, and real-time data tracking through the Integrated Health Information Platform (IHIP). For dengue, the number of Sentinel Surveillance Hospitals has grown to over 800, each linked with Apex Referral Laboratories for advanced diagnostics. Additionally, 17 Regional Offices for Health and Family Welfare are responsible for conducting entomological studies, drug resistance monitoring, quality control of blood slides, and capacity building across states.

Elimination targets: malaria, kala-azar, and filariasis 🔗

The NVBDCP does not just aim to control these diseases – it has set ambitious elimination targets for three of them. The programme targets the elimination of malaria by 2030, kala-azar elimination, and the elimination of lymphatic filariasis. For malaria specifically, the National Framework for Malaria Elimination (NFME) 2016-2030 provides a clear roadmap, with an interim goal of zero indigenous malaria cases by 2027.

India’s progress toward these targets has been remarkable. Malaria cases dropped from 11,69,261 in 2015 to 2,27,564 in 2023, while deaths fell from 384 to just 83 – representing an approximately 80% reduction in both metrics. At a broader scale, since 2000, India has cut malaria cases by 17.7 million and achieved a 93% reduction in case incidence, from 20 to 1.5 cases per 1,000 people at risk. This progress was recognised globally when India exited the WHO’s High Burden to High Impact (HBHI) group in 2024 – a significant milestone signalling a turning point in the country’s fight against malaria.

National Dengue Day and public awareness initiatives 🔗

While malaria has a long history of control programmes, dengue is a more recently emerging threat that requires a different approach – one centred heavily on public awareness and community-driven prevention. Unlike malaria, there is no widely deployed vaccine or prophylactic treatment for dengue. Prevention depends almost entirely on eliminating the breeding habitats of Aedes mosquitoes and protecting oneself from bites.

National Dengue Day: May 16 🔗

Since 2016, the Ministry of Health and Family Welfare has declared May 16 as National Dengue Day and July as Anti-Dengue Month to increase public awareness and signal the start of preparatory activities before the monsoon outbreak season. The timing is strategic – dengue cases typically peak during and after the monsoon period (July-October), so public messaging in May gives communities time to prepare.

On National Dengue Day, awareness activities are carried out across the country. Schools, colleges, hospitals, and government offices participate through campaigns, cleanliness drives, health camps, street plays, posters, and pamphlets to spread information about dengue transmission, symptoms, and prevention. The government also uses digital platforms, including social media campaigns and the mobile application “India Fights Dengue,” to reach a wider audience.

The “10 Hafte – 10 Baje – 10 Minute” campaign 🔗

One of the most notable community-level initiatives has been the Delhi Government’s “10 Hafte – 10 Baje – 10 Minute” campaign, which urges residents to spend 10 minutes at 10 AM every Sunday for 10 weeks checking their homes and surroundings for stagnant water. This kind of direct, actionable messaging is what makes public health campaigns effective – it gives people a specific, manageable task rather than vague instructions.

Strategic IEC/BCC plan 🔗

The NVBDCP’s Strategic Information Education Communication (IEC) Plan uses a 360-degree communication approach, employing all media channels including mass media, mid-media, social media, and interpersonal activities to reach citizens. The messaging covers myths versus facts about dengue, dos and don’ts, how to identify symptoms, and how to stop mosquito breeding. Research has shown that community-based interventions involving workshops, awareness campaigns, and forums lead to measurable improvements in dengue awareness levels and the adoption of preventive behaviours in urban areas.

Challenges that remain 🔗

Despite impressive achievements, the NVBDCP faces several ongoing challenges. Urbanisation is creating new breeding grounds for Aedes mosquitoes, with poorly managed water storage, construction sites, and plastic waste contributing to dengue outbreaks in cities. Climate change is altering mosquito habitats and extending transmission seasons into previously unaffected areas. Insecticide resistance, sustainability concerns, and environmental safety issues also limit the long-term effectiveness of chemical-based vector control methods.

Additionally, tribal and forested regions remain hotspots for malaria transmission, and the rise of urban malaria due to the invasive Anopheles stephensi mosquito presents unique new challenges. Ensuring that diagnostic facilities, trained health workers, and essential medicines reach the most remote communities continues to be a logistical challenge in a country as vast as India.

The road ahead 🔗

India’s vision is clear: zero indigenous malaria cases by 2027 and complete malaria elimination by 2030. To get there, the government is investing in strengthened surveillance systems, expanded community engagement, and innovative technologies including AI-based outbreak prediction and GIS mapping for vector control. The Intensified Malaria Elimination Project-3 (IMEP-3) targets 159 districts across 12 states, focusing on vulnerable populations through LLIN distribution, entomological studies, and improved surveillance.

For dengue and other vector-borne diseases where elimination may not yet be feasible, the focus remains on reducing mortality, preventing outbreaks, and building a health-aware citizenry that takes prevention into its own hands. The success of the NVBDCP will ultimately depend not just on government action, but on sustained community participation – every stagnant water source cleared, every bed net used, and every fever reported early contributes to the larger goal.

What do you think? With India targeting malaria elimination by 2030, what role do you think individual citizens and local communities should play in making that goal a reality? And in your own neighbourhood, are there simple steps being overlooked that could prevent mosquito breeding during the monsoon season?

References

1. https://www.who.int/india/health-topics/malaria
2. https://pmc.ncbi.nlm.nih.gov/articles/PMC5674540/
3. https://www.thehealthquest.co.in/dengue/strategic-awareness-programmes-to-curb-dengue-fever-in-india/
4. https://www.pib.gov.in/PressReleasePage.aspx?PRID=2087878
5. https://www.who.int/teams/global-malaria-programme/reports/world-malaria-report-2024/questions-and-answers