H5N1 Bird Flu Outbreak in Chennai After Hundreds of Crows Found Dead, Government Issues Health Advisory

An outbreak of the H5N1 avian influenza virus has been confirmed in Chennai after laboratory tests detected the infection in samples collected from dead crows across multiple areas of the city. Health and animal husbandry authorities have issued an urgent public advisory, urging residents to avoid contact with bird carcasses and report any fresh sightings immediately.

Hundreds of crows were found dead in different localities, triggering concern among residents and prompting swift action from state and central agencies. Officials confirmed that biosecurity protocols are now being strictly implemented to contain the spread of the virus and prevent transmission to other birds or animals.

Advisory Issued as Surveillance Intensifies

Authorities have directed that all carcasses of birds, including poultry, must be either incinerated or deeply buried to reduce the risk of further infection. Surveillance has been stepped up across affected areas, with field teams monitoring bird deaths and collecting samples for testing.

Following confirmation of Highly Pathogenic Avian Influenza (HPAI) in samples from Adyar, the Union Ministry of Animal Husbandry urged the Tamil Nadu government to implement a coordinated response based on the One-Health approach. The strategy involves collaboration between animal health, human health and wildlife departments to ensure a comprehensive containment plan.

Officials emphasised that early detection and strict disposal measures are critical in limiting the spread of H5N1 among bird populations, especially in urban environments where human and wildlife interaction is common.

What Is H5N1 and Why It Raises Concern

H5N1 is a highly pathogenic strain of influenza A virus that primarily affects birds, particularly poultry and wild species. The infection can spread rapidly among birds, often leading to high mortality rates and large-scale outbreaks.

While human infections remain rare, authorities monitor such incidents closely because the virus can cause severe illness in humans under certain conditions. Past outbreaks have shown that close contact with infected birds or contaminated environments poses the highest risk.

Experts stress that the current advisory is largely precautionary and aimed at preventing unnecessary exposure. Residents have been asked not to handle dead birds and to maintain strict hygiene practices if accidental contact occurs.

Preventive Measures and Public Safety Guidelines

As part of containment efforts, authorities have launched awareness campaigns across the city. Forest and veterinary officials have been instructed to report bird deaths promptly, while diagnostic laboratories are handling sample testing to track the spread.

Farm owners have also been advised to tighten biosecurity measures, including restricting access to poultry farms, using disinfectants, limiting worker movement and preventing wild birds from entering enclosures. Proper disposal of kitchen and slaughter waste has been highlighted as a key step to avoid attracting infected birds.

Officials reassured the public that the situation is being closely monitored and that preventive measures are in place to safeguard both animal and human health. Citizens have been urged to stay alert but avoid panic, rely on official advisories and cooperate with surveillance teams as Chennai works to contain the outbreak effectively.