Learn about the new H5N9 bird flu strain in the US, its impact on food safety and prices, plus expert advice on protecting yourself from avian influenza.

The H5N9 strain of avian influenza is much more rare than the H5N1 which has been responsible for most of the reported human cases and the first human death.

Both H5N9 and H5N1 strains of avian flu were identified through tests by the US Department of Agriculture's National Veterinary Services Laboratory (USDA NVSL), after the outbreak was first detected last November.