The escalating bird flu crisis is ravaging the nation's egg supply, and that shortage has hit Arizona along with the rest of the U.S. Why it matters: An outbreak of avian influenza is growing and has affected nearly 13 million birds in the last 30 days,

A nationwide outbreak of the avian flu is hurting the nation's chicken supply and keeping egg prices high, according to one Arizona egg producer.

The American egg market is facing a serious crisis caused by avian flu, which may persist for several more months, CNN reports. As a result, in some parts of the United States, egg shelves are empty,