California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in that state and causing sporadic illnesses in people in the U.S.

The declaration of a state of emergency in California over avian influenza comes within days of the first severe human case of bird flu in the U.S.

Bird flu continues to impact eggs prices nearly two years after the initial price shock. Now the demand for cage-free eggs is making things harder.

Wholesale prices for large eggs in the Midwest reached $5.57 per dozen, a 150 percent jump from a year ago. In California, the price hit $8.85 per dozen.

With the spread of bird flu in the U.S., the prices of eggs have jumped in recent weeks, throwing another curveball to consumers looking to prepare goods for the upcoming holidays. The price tag for a dozen Grade A large eggs was nearly $3.