Customers in Louisiana and nationwide are dealing with egg prices going up and sparsely populated aisles at the grocery store following the spread of the bird flu in the U.S.

The United States has reported its first outbreak of H5N9 bird flu in poultry on a duck farm in California, Reuters reported, citing the World Organisation for Animal Health (WOAH) on Monday.

Two different lineages are currently circulating, one carried by wild birds, the other infecting dairy farms in the US. The challenge is to find out how far the virus is evolving to adapt to humans, following the death of an American patient.

Avian flu is rampant in poultry farms and in wild birds in the U.S. Every mutation brings the virus one step closer to the brink of human-to-human transmission, but predicting whether a virus will cross that threshold remains an uncertain science.

The Highly Pathogenic Avian Influenza, or bird flu, has resurged across Pennsylvania in recent weeks, causing significant bird mortality — particularly in wild geese. First detected in Pennsylvania

Staying a step ahead of the avian influenza virus with surveillance, testing and research could mean the difference between a close call and global catastrophe

Dr. Michael Osterholm says that the primary kind of birds impacted by the flu is migratory waterfowl, like geese and ducks, and these birds often hang out in farm fields where they defecate.

H5N1 avian influenza continues to spread amid commercial and backyard poultry, and additional cases have been reported in domestic cats

With the advent of cases of avian flu in southern New England, and the rise in egg prices due to limited supply as a result, concerns are rising about the threat and impact of the fowl-borne illness.

Massachusetts, United States - A man died Monday in Louisiana after contracting the bird flu virus after being exposed to birds. By December the CDC had identified at least 65 human infections of avian flu in the United States,

The expanded protocols come after a child in California tested positive for the bird flu despite no known contact with animals. The Centers for Disease Control issued a health alert calling for the immediate testing of patients hospitalized with influenza ...