The Highly Pathogenic Avian Influenza (HPAI) H5N1 strain, commonly known as bird flu, stands as the most critical and economically devastating disease threat to the Indian poultry industry.
During the 2025–2026 period, India experienced multiple widespread waves of highly pathogenic avian influenza (H5N1 bird flu), resulting in dozens of confirmed outbreaks in domestic poultry and wild birds across more than 10 states. In 2025, the Union Government officially recorded 41 bird flu outbreaks spanning 10 states (as of late July), followed by major subsequent spikes late in the year and extending through mid-2026 across several regions.
Throughout 2025 and 2026, the virus has triggered recurring waves of mass mortality and mandatory culling across several states. The situation has severely impacted both commercial poultry operations and the backyard farming sector.
Outbreak Flashpoints
The 2024–2025 Base Baseline
- Scope: 10 states reported poultry outbreaks by mid-2025, including Maharashtra, Jharkhand, Telangana, and Bihar.
- Impact: Recorded 41 official poultry outbreaks. This year was also notable for recording rare mammalian spillover cases (e.g., inside zoo environments) and two highly isolated human casualties.
- Geographical Hotspots: Multiple states—including Kerala, Karnataka, Bihar, Tamil Nadu, Maharashtra, and Uttar Pradesh—have reported severe, localized outbreaks.
- Massive Culling & Bird Loss: In early 2026, over 54,000 birds died and an additional 30,000+ were culled in Kerala alone. Later in the year, Maharashtra saw the culling of nearly 4 lakh chickens, while outbreaks at government research centres in Bengaluru and Patna forced the immediate eradication of thousands of birds.
- Wild Bird Vectors: India’s position along the Central Asian Flyway makes it highly vulnerable. Migratory birds consistently reintroduce the virus into domestic duck populations, crows, and peacocks, facilitating widespread environmental transmission.
Kerala out break
- Date: December 2025
- The World Organisation for Animal Health (WOAH) reported 11 distinct outbreaks on farms across the Alappuzha and Kottayam districts. This wave alone led to the death and pre-emptive culling of over 84,000 birds (predominantly ducks.
Tamil Nadu Crow Mortality Event
- Date: February 2026
- Impact: Chennai was placed on high alert following a massive wildlife outbreak where over 1,500 crows died after testing positive for the H5N1 strain.
Bihar Multi-District Transmission
- Date: January–April 2026
- Impact: The virus spread dynamically across six separate districts. High-mortality outbreaks were registered among crows in Bhagalpur and Purnia, alongside structural infections at a commercial poultry facility in Patna]
Karnataka Government Poultry Training Centre Outbreak
- Date: April 2026
- Impact: An H5N1 outbreak was confirmed at this state facility, requiring the mandatory culling of over 7,400 birds.
- Date: Mid-May 2026
- Impact: The town of Navapur faced a severe containment breach where eight poultry farms tested positive. Containment operations required culling more than 3.89 lakh chickens and destroying 21 lakh eggs.
The Regulatory & Economic Battleground
- The Vaccine Debate: The Indian poultry sector has actively lobbied the government to permit H5N1 vaccination to avoid catastrophic economic losses. However, the Government of India has maintained its strict “detect and cull” policy, keeping H5N1 vaccines under scientific evaluation due to fears that incomplete immunity could mask active transmission.
- Financial Volatility: Beyond direct farm losses, these outbreaks trigger massive panic, temporarily slashing local chicken and egg demand and plummeting farm gate realisations by 15% to 25% during active flare-ups.
Secondary Disease Threats
While bird flu commands the headlines, Indian farmers are simultaneously battling co-circulating health risks that undermine flock productivity:
- Ranikhet Disease (Newcastle Disease): This highly contagious viral infection remains a “silent killer” in India. It caused severe panic in northern poultry hubs like Barwala (Haryana), wiping out over 1.5 lakh chickens in brief, acute spikes.
- Immunosuppressive & Gut Conditions: Driven by highly humid conditions and variable feed quality, cases of Coccidiosis, Mycotoxicosis, and Colibacillosis have surged, weakening bird immunity and driving up secondary bacterial infections.
The Economic Impact
The economic consequences of historical avian influenza waves on the Indian poultry sector have been severe, resulting in thousands of crores in cumulative losses. Because fear typically spreads faster than the virus itself, the financial damage is driven far less by the biological loss of birds and much more by abrupt consumer panics and sudden demand collapses.
Key Takeaways from the 2025–2026 Cycle
- A Shift to Pan-India Distribution: Unlike early historical outbreaks that were geographically isolated to specific pockets like West Bengal or Maharashtra, the 2025–2026 wave demonstrated highly dynamic, multi-state transmission. With over 41 outbreaks recorded across more than 10 states—ranging from the southern duck farming belts of Kerala to the western industrial hubs of Maharashtra—the virus proved to be an omnipresent national threat.
- Ecological and Cross-Species Warnings: The period was marked by concerning biological indicators, most notably the sporadic spillover of H5N1 into mammalian wildlife species (such as leopards and tigers in zoo environments). While India successfully maintained zero human H5N1 cases throughout 2026, these cross-species transitions kept public health frameworks on high alert.
- Severe Financial Aftershocks: The economic impact followed a familiar, devastating pattern. While direct asset losses from culling thousands of birds were severe for individual farmers, the macro-level damage was driven by sharp consumer panic. Sudden demand drops led to immediate wholesale price crashes, deeply straining smallholder farmers and disrupting the broader feed supply chain (maize and soybean markets).
- Policy Evolution: The scale of the 2025–2026 outbreaks highlighted the structural gaps in the traditional “detect and cull” strategy. Relying solely on the 50:50 center-state compensation model often left farmers facing long recovery timelines, pushing the livestock sector to aggressively re-evaluate biosecurity guardrails, stricter inter-state movement controls, and the potential future integration of targeted poultry vaccination policies.
Immediate Emergency Protocols (If Mortality Occurs)
If sudden, unexplained poultry mortality spikes occur, farmers are mandated by law to execute the following emergency workflow:
- Immediate Quarantine: The affected shed must be completely sealed off immediately. No birds, eggs, or litter can leave the farm.
- Rapid Notification: The farmer must instantly report the mortality spike to the nearest Veterinary Assistant Surgeon (VAS) or district animal husbandry office.
- Safe Disposal: Prior to official containment team arrivals, any dead birds must be safely collected using Personal Protective Equipment (PPE), sprayed with disinfectant, and buried deep (at least 6 feet) with lime powder away from water sources, rather than being thrown into the open.
Conclusion In conclusion, the 2025–2026 bird flu crisis emphasized that avian influenza is no longer an occasional seasonal anomaly for India, but an endemic structural risk. Protecting the livelihood of millions of poultry farmers will increasingly depend on moving away from reactive emergency culling and transitioning toward advanced digital surveillance, standardized biosecurity zones, and faster financial relief mechanisms.