Bird flu, also known as H5N1, continues to spread among U.S. livestock, driving up egg prices and worrying public health experts.

CNN’s Nick Watt gets a firsthand look at how eggs are being rationed during a visit to Hilliker’s Ranch in Lakeside, CA. He explains why this is happening and who is to blame for the surge.

The order affects roughly 80 markets in New York City and in several nearby counties. New Jersey is also asking its live markets to voluntarily clean, disinfect and temporarily close.

As a precaution, over the last two weeks, we have moved vulnerable bird species to protected areas in our parks,” officials said in a statement. On Friday, state officials ordered bird markets in the metropolitan area to close for a week after seven cases of avian flu were detected during routine inspections in the Bronx,

"We will continue to take these measured, common sense steps that will curb the spread of bird flu and ultimately protect our communities.”