Bird Flu is Spreading in Bihar

Why in the News?

Bihar is currently facing a bird flu outbreak, yet the state lacks a dedicated testing facility for confirming cases.

What is H5N1 Bird Flu?

• H5N1 (Avian Influenza A) is a highly contagious virus affecting birds and some mammals.
• It was first detected in China in 1996 and has since spread globally, including India.
• In 2020, a highly pathogenic strain emerged, leading to outbreaks in Europe, Africa, Asia, and the Americas.

Impact of H5N1 on Animals:

• Wild birds, especially endangered species like California condors, have suffered mass casualties.
• The virus previously targeted poultry, but now marine mammals (sea lions, dolphins) and terrestrial mammals (foxes, bears, pumas, minks) are also infected.
• India’s first H5N1 outbreak occurred in Maharashtra and Gujarat in 2015.

Human Risk and Potential Transmission:

• Direct human infections are rare and usually occur through close contact with infected birds.
• Climate change is worsening the spread, altering bird migration patterns and increasing interspecies interactions.
• Human-to-human transmission is uncommon, but experts warn that mutations could make it possible in the future.