Avian Influenza Spreads Across Species

A recent surge in avian influenza cases in the USA has sparked concern among experts, as the H5N1 virus affects both birds and mammals. The virus, first detected in dairy cows in Texas, Kansas, and New Mexico, has led to the culling of around 170 million poultry and impacted nearly 1,000 cattle herds across 17 states. Over 12,500 cases have been reported in wild birds, with 70 human infections primarily among those in direct contact with animals.

In a global first, England detected H5N1 in a sheep during routine testing in Yorkshire. Although the infected sheep was culled and no further cases were found, this incident emphasizes the potential risk of cross-species transmission. Despite the virus's presence in various mammals, authorities maintain that the risk to humans remains low. Strict biosecurity measures are recommended to prevent further spread, especially in livestock. The economic and political implications of the outbreak are significant, particularly concerning egg prices.