A 28-year-old man from rural Maharashtra presents with fever, anxiety, and excessive salivation for 3 days. He recalls being bitten by a stray dog 6 weeks ago but did not seek medical attention. On examination, he shows hydrophobia and aerophobia. What is the most common animal source of rabies virus transmission in India?

Explanation

## Most Common Animal Source of Rabies in India **Key Point:** Domestic dogs account for >95% of human rabies deaths worldwide and are the most common source in India, responsible for approximately 96% of all rabies cases. ### Epidemiology in India | Animal Source | Frequency in India | Global Frequency | Geographic Notes | | --- | --- | --- | --- | | Domestic dogs | 96% | 95% | Urban and rural areas; most accessible to humans | | Bats | <2% | 5–10% | Increasing recognition; mainly in developed countries | | Jackals | <1% | Rare | Sporadic cases in rural India | | Cats | <1% | 5% | Less common than dogs | ### Why Dogs Are the Primary Vector 1. **High viral load in saliva** — rabies virus replicates efficiently in canine salivary glands 2. **Frequent human contact** — stray and pet dogs are ubiquitous in Indian communities 3. **Bite behavior** — dogs bite during territorial or defensive encounters 4. **Lack of post-exposure prophylaxis (PEP)** — many victims in rural India do not receive timely treatment **High-Yield:** In India, >90% of rabies deaths follow dog bites. The WHO and Indian guidelines emphasize dog bite as the sentinel exposure requiring immediate PEP. **Clinical Pearl:** The 6-week incubation period in this case is typical for a distal bite (e.g., hand or foot). Shorter incubation periods (days to 2 weeks) occur with bites to the face or neck due to proximity to the CNS. [cite:Park 26e Ch 24]