For Prelims: Avian Influenza (Bird Flu), Culling, Biosecurity, Virus strain, Outbreak location, Birds culled, Eggs destroyed, Poultry feed disposed
For Mains: Highly pathogenic avian influenza, biosecurity, One Health approach, vaccine hesitancy, compensation delay
Source:
Indian Express
5 facts for one-day exams
SSC, railway, police and teaching exams ask direct questions like these.
- H5N1 is a highly pathogenic avian influenza virus.
- 4,13,682 birds were culled in Maharashtra's Nandurbar district.
- India permits vaccination only against the H9N2 strain.
- The H9N2 vaccine was developed by ICAR-NIHSAD, Bhopal.
- The nodal ministry is the Department of Animal Husbandry and Dairying.
Why in the news?
A bird flu (H5N1) outbreak in Maharashtra's Nandurbar district led to culling of 4.13 lakh birds and destruction of 24.91 lakh eggs. Poultry farmers have demanded permission for H5N1 vaccination in high-risk areas, but India's current policy permits vaccination only against the low-pathogenic H9N2 strain, not highly pathogenic avian influenza.
Summary
- India does not permit vaccination against highly pathogenic H5N1 bird flu in poultry; it relies on biosecurity, early detection, culling and movement restrictions.
- The Department of Animal Husbandry and Dairying discussed H5N1 vaccination in April 2025 but said more research is needed, and work on an Indian vaccine has begun.
- Countries like China, Vietnam, Egypt and France have used H5N1 vaccination alongside other control measures.
Highlights
Maharashtra H5N1 Outbreak
An H5N1 outbreak in Navapur, Nandurbar district led to culling of 4.13 lakh birds and destruction of 24.91 lakh eggs.
India's Disease Control Approach
India emphasises biosecurity, early detection and culling; vaccination against highly pathogenic avian influenza is not permitted pending more research.
Background
Bird flu (avian influenza) is caused by influenza A viruses. H5N1 is a highly pathogenic strain causing severe illness and high mortality in poultry. India's current strategy focuses on preventing virus entry, early detection, culling infected birds and movement restrictions. Vaccination is allowed only against the low-pathogenic H9N2 strain.
Key Analysis and Impact
The Navapur outbreak exposed vulnerabilities in densely concentrated poultry farms. Despite awareness, basic biosecurity measures like farm-only footwear, visitor registration, and water source protection are not consistently followed. Farmers face financial strain from delayed compensation and want vaccination as an additional tool. Countries like China, Vietnam, Egypt and France use H5N1 vaccination, but available vaccines do not provide complete protection and may not prevent spread.
Way Forward
The Department of Animal Husbandry and Dairying has begun work on an Indian H5N1 vaccine. Experts recommend moving from a reactive to a coordinated system with written outbreak-response plans, routine surveillance, and consistent biosecurity practices. Improved farm conditions like adequate space, ventilation and low ammonia levels can also reduce disease susceptibility.
Background GK
Textbook concepts you need to understand this news
- Avian Influenza (Bird Flu)
- A viral disease caused by influenza A viruses that primarily infects birds. Strains are classified as highly pathogenic (e.g., H5N1) or low pathogenic (e.g., H9N2) based on disease severity in poultry.
- Culling
- The process of selectively killing infected or exposed animals to prevent the spread of disease. It is a key component of India's avian influenza control strategy.
- Biosecurity
- A set of preventive measures designed to reduce the risk of introduction and spread of infectious diseases on farms, including controlled entry, disinfection, and isolation of new or sick animals.
Facts to remember
Tap a card to see the answer. Try to recall it first.
How exams will ask this
- Data: 4,13,682 birds culled; 24,91,723 eggs destroyed; 5,48,958 kg feed disposed
- Nodal Body: Department of Animal Husbandry and Dairying (Ministry of Fisheries, Animal Husbandry and Dairying)
Don't make this mistake!
Students may confuse H5N1 (highly pathogenic, no vaccine permitted) with H9N2 (low pathogenic, vaccine permitted). They may also think India permits H5N1 vaccination, but it only permits H9N2 vaccination.
Write these in mains answers
- Highly pathogenic avian influenza, biosecurity, One Health approach, vaccine hesitancy, compensation delay
Stuck? Get it in one tap
Bird flu caused by the H5N1 virus broke out in Maharashtra. To stop it from spreading, the government killed 4.13 lakh birds and destroyed 24.91 lakh eggs. Farmers want the government to allow vaccination against H5N1, but India currently only allows a vaccine for a milder strain called H9N2. Scientists say the available H5N1 vaccines do not fully stop the virus from spreading.
- H5N1 is a highly pathogenic avian influenza virus.
- 4,13,682 birds were culled in Maharashtra's Nandurbar district.
- India permits vaccination only against the H9N2 strain.
- The H9N2 vaccine was developed by ICAR-NIHSAD, Bhopal.
- The nodal ministry is the Department of Animal Husbandry and Dairying.
- Environment: Diseases and their control
- Agriculture: Animal husbandry and poultry
Related concepts: Avian Influenza (Bird Flu), Culling, Biosecurity
Practice questions
Pick an answer, then read the explanation.
- Q1Medium
Which Indian body developed the permitted vaccine against the low-pathogenic H9N2 bird flu strain?
Explanation: The Centre has permitted commercial use of a vaccine against H9N2 developed by ICAR-NIHSAD (National Institute of High Security Animal Diseases), Bhopal. IVRI and NIV are other animal/health research bodies but did not develop this vaccine.
- Q2Hard
Consider the following statements regarding avian influenza in India:
- 1.India permits vaccination against the highly pathogenic H5N1 strain of bird flu in poultry.
- 2.The current disease-control approach emphasises biosecurity, early detection and culling.
- 3.The H9N2 strain is classified as low pathogenic and a vaccine for it has been developed by ICAR-NIHSAD.
Which of the statements given above is/are correct?
Explanation: Statement 1 is incorrect because India does NOT permit H5N1 vaccination; it only permits H9N2 vaccination. Statement 2 is correct as India's approach focuses on biosecurity, early detection and culling. Statement 3 is correct as H9N2 is low pathogenic and a vaccine was developed by ICAR-NIHSAD.
- Q3Easy
How many layer birds were culled in the April 2026 H5N1 outbreak in Maharashtra's Nandurbar district?
Explanation: 4,13,682 layer birds were culled. 24,91,723 is the number of eggs destroyed, and 5,48,958 kg is the poultry feed disposed. 2,49,723 is not a figure from the news.
- Q4Medium
Why has India not permitted vaccination against the highly pathogenic H5N1 avian influenza strain in poultry?
Explanation: Scientists pointed out that available H5N1 vaccines cannot guarantee that vaccinated birds will not catch or spread the infection. The Centre said more research is needed. Vaccines are available abroad, and H5N1 is a known threat, so options A and C are incorrect. Cost is not cited as the primary reason.
Frequently asked questions
1. What is the H5N1 bird flu strain?
H5N1 is a highly pathogenic avian influenza virus that causes severe illness and high mortality in poultry. India does not permit vaccination against H5N1.
2. How many birds were culled in the Maharashtra bird flu outbreak?
4,13,682 layer birds were culled in Navapur taluka, Nandurbar district, Maharashtra. Additionally, 24,91,723 eggs were destroyed.
3. Why are poultry farmers demanding H5N1 vaccination?
Farmers want vaccination to prevent repeated destruction of entire flocks during outbreaks. They also seek better biosecurity training, subsidies, and timely compensation.
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- Original10 November 2026 · Read story
