Bird Flu Strains in India Traced to East Asian Origins Through Genetic Mapping

 

Researchers at India’s National Institute of Virology have traced the origins of recent bird flu outbreaks in Kerala to viruses that likely arrived from East Asia. Using genome sequencing and phylogeographic analysis, the team discovered that the H5N1 strain found in 2024 is a result of genetic mixing between viruses from Europe and Asia.

This tracking was made possible through deep genetic analysis of viruses found in birds in Kerala. The H5N1 strain showed gene segments from Eurasian lineages, which likely entered India through migratory birds. The area sits along a major bird migration corridor, and dense poultry populations further increase the risk of spillover into human communities.

Understanding the origin and evolution of these flu strains is critical to stopping future outbreaks. The researchers recommend stronger molecular surveillance, especially in high-risk areas where wild birds interact with farm animals. Monitoring changes in viral genomes over time helps scientists predict which strains might become more contagious or dangerous to humans.

Source: timesofindia.indiatimes.com