Conversation

H5N1 Bird Flu Is About to Go Global.

The D1.1 strain of H5N1 in Nevada has acquired the PB2 D701N mutation, allowing it to adapt to mammals.

This mutation is driving a much faster spread in Nevada dairy herds than the B3.13 strain in California, marking a major shift in the virus’s evolution.

Migrating birds will spread the D1.1 (D701N) strain worldwide, increasing the risk of multiple mammalian outbreaks.

This is no longer just a U.S. cattle issue it is a growing global threat.