Canine Vaccination and Rabies Control: Shifting from Reactive Care to Preventive Strategy

Rabies control in India has long relied on post-exposure prophylaxis (PEP), a strategy that has undoubtedly saved millions of lives. However, PEP is fundamentally reactive; it intervenes after exposure has already occurred. For a disease that is almost entirely transmitted through dogs, this approach alone cannot achieve elimination. A sustainable solution lies in addressing the source of infection itself, making canine vaccination and population management central to rabies control efforts. 

Dogs are responsible for nearly 99% of rabies transmission to humans, making them the primary reservoir of infection¹. While human vaccination prevents mortality, it does not interrupt viral transmission within animal populations. This distinction is critical. As long as the virus continues to circulate among dogs, the risk of human exposure remains constant. Therefore, breaking the transmission cycle requires a proactive, animal-focused approach. 

Importance of Achieving Adequate Vaccination Coverage 

Epidemiological evidence suggests that vaccinating at least 70% of the dog population in endemic areas is sufficient to interrupt rabies transmission^1,2. This threshold ensures herd immunity within the canine population, significantly reducing the likelihood of virus spread. However, achieving and sustaining this level of coverage remains a major operational challenge in India. 

The difficulty lies not only in the sheer size of the stray dog population but also in logistical and resource constraints. Free-roaming dogs are often inaccessible through conventional vaccination approaches, requiring coordinated efforts involving trained personnel, equipment, and funding. In many regions, these limitations result in suboptimal vaccination coverage, allowing the virus to persist. 

Policy Framework and National Initiatives 

Recognising the importance of canine vaccination, India has developed several policy frameworks aimed at controlling rabies at its source. The National Action Plan for Dog Mediated Rabies Elimination by 2030 (NAPRE) focuses on three key pillars: mass dog vaccination, dog population management, and public awareness. This integrated approach aligns with the One Health concept, which emphasises collaboration across human, animal, and environmental health sectors¹. 

The Animal Birth Control Rules, 2023 further strengthen these efforts by promoting humane management of stray dog populations through sterilisation and vaccination. Financial support from programmes such as Assistance to States for Control of Animal Diseases (ASCAD) and Rashtriya Krishi Vikas Yojana (RKVY) enables states to implement vaccination campaigns and strengthen surveillance systems. 

Despite these structured initiatives, ground-level implementation often faces inconsistencies. Variability in resource allocation, infrastructure, and coordination between agencies can limit the effectiveness of these programmes. 

Practical Challenges in Canine Rabies Control 

One of the most significant challenges is the accessibility of free-roaming dog populations. Capturing dogs for parenteral vaccination is labour-intensive and often impractical in densely populated urban settings. Additionally, maintaining vaccination records and ensuring booster doses further complicates the process. 

Another concern is variability in vaccine-induced immunity. Protective antibody levels depend on factors such as vaccine quality, storage conditions, and administration techniques. Inconsistent practices can lead to inadequate immunity even among vaccinated animals. Furthermore, dogs younger than three months are often excluded from vaccination programmes, despite evidence suggesting that transmission from young animals can occur^3,4. This creates gaps in herd immunity. 

Canine vaccine hesitancy among pet owners is an emerging issue. Misconceptions regarding vaccine safety, cost concerns, and lack of awareness about rabies risk contribute to poor compliance.86,87 These factors mirror human vaccine hesitancy and highlight the need for targeted communication strategies. 

Emerging Solutions and Innovations 

To overcome these challenges, new approaches are being explored. Oral rabies vaccines (ORV) have emerged as a promising solution for vaccinating hard-to-reach dog populations. These vaccines can be delivered through bait, eliminating the need for physical capture and significantly improving coverage in difficult settings⁵. ORVs have demonstrated good safety profiles and can be integrated into existing vaccination programmes. 

Technological advancements are also enhancing vaccination efficiency. Innovations such as microneedle patches and jet injectors are being developed to improve accuracy of vaccine delivery and reduce wastage⁶. These tools can be particularly useful in large-scale campaigns where efficiency and precision are critical. 

Improved surveillance systems also play a crucial role. Accurate data on dog populations, vaccination coverage, and rabies incidence are essential for planning and evaluating interventions. However, current surveillance systems remain fragmented, leading to underreporting and gaps in data¹. Strengthening these systems is necessary for evidence-based decision-making. 

Integrating Veterinary Practice into Rabies Prevention 

Veterinarians are central to the success of canine rabies control strategies. Their role extends beyond clinical care to include vaccination, surveillance, and community education. By promoting responsible pet ownership and encouraging regular vaccination, veterinarians can directly influence disease control at the household leve1^l. 

In addition, veterinarians can contribute to public health efforts by participating in mass vaccination campaigns, supporting surveillance systems, and collaborating with local authorities. Their expertise is critical in ensuring that vaccination programmes are both effective and scientifically sound. 

Conclusion: Building a Preventive Framework 

Rabies elimination cannot be achieved through PEP alone. While PEP remains essential for preventing human deaths, it does not address the root cause of transmission. A shift toward preventive strategies, particularly canine vaccination, is necessary for long-term control. 

By focusing on achieving adequate vaccination coverage, addressing operational challenges, and leveraging new technologies, India can move closer to eliminating rabies. Veterinarians, as key stakeholders in this effort, have the opportunity to lead this transition from reactive care to proactive prevention, ultimately reducing the burden of rabies across both human and animal populations. 

Reference 

1. Pardeshi G, Sharma P, Ittiel A. Rabies post-exposure prophylaxis in India: a SWOT analysis. Therapeutic Advances in Vaccines and Immunotherapy. 2026 Jan;14:25151355251410780. https://journals.sagepub.com/doi/pdf/10.1177/25151355251410780 

2. World Health Organization. Vaccinating against rabies to save lives. World Health Organization. Geneva, Switzerland, https://www.who.int/ activities/vaccinating-against-rabies-to-save-lives 

3. Singhai M, Jaiswal R, Siddiqui C, Tiwari S, Gupta N, Bala M, Singh SK. Rabies can be a disease of puppyhood. Journal of Family Medicine and Primary Care. 2022 Jun 1;11(6):3339-41. https://journals.lww.com/jfmpc/_layouts/15/oaks.journals/downloadpdf.aspx?an=01697686-202206000-00178 

4. Yale G, Sudarshan S, Taj S, Patchimuthu GI, Mangalanathan BV, Belludi AY, Shampur MN, Krishnaswamy TG, Mazeri S. Investigation of protective level of rabies antibodies in vaccinated dogs in Chennai, India. Veterinary record open. 2021 Dec;8(1):e8. https://bvajournals.onlinelibrary.wiley.com/doi/pdf/10.1002/vro2.8’ 

5. Yale G, Lopes M, Isloor S, Head JR, Mazeri S, Gamble L, Dukpa K, Gongal G, Gibson AD. Review of oral rabies vaccination of dogs and its application in India. Viruses. 2022 Jan 14;14(1):155. https://www.mdpi.com/1999-4915/14/1/155 

6. Programme for Appropriate Technology in Health. Intradermal Delivery of Vaccines A review of the literature and the potential for development for use in low- and middle income countries. World Health Organization. PATH. France, https://media.path.org/documents/ TS_opt_idd_review.pdf