The Centers for Disease Control and Prevention are monitoring the bird flu situation in the United States. Here's what to know and how to stay safe.

The LI duck farm, the last of its kind, houses more than 100,000 birds and is now under quarantine, Suffolk County Health officials say.

The death comes at a time when the H5N1 virus has recently undergone an unusual mutation that is causing concern to the World Health Organization.

Seven states lost more than 1 million birds to avian influenza during the past year, while two lost more than 10 million.

California, Minnesota, South Dakota Michigan and Iowa all reached double digits when it came to flocks infected.

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.

Over 100,000 birds were euthanized at a poultry farm on Long Island to prevent the spread of bird flu, FOX 5 NY's Jodi Goldberg confirmed.

"The Chinese poultry lineage may have experienced more vaccine-driven selection compared to other lineages," the researchers wrote.

The Connecticut Department of Agriculture confirmed the presence of Highly Pathogenic Avian Influenza H5N1, commonly known as bird flu, in a flock of chickens, ducks and peacocks on Jan. 15. These birds were family pets and had been in close contact with wild waterfowl from a nearby pond, according to the release.

The highly contagious avian influenza has wreaked havoc on the egg market. In November and December alone, 17.2 million egg-laying hens died as a result of the virus.

The first case of avian flu in a commercial poultry operation has been found, according to the Georgia Department of Agriculture.

The first human death caused by H5N1 in the U.S. was reported in Louisiana on Jan. 6. Here's what to know about bird flu.