The humble egg is now a source of frustration for millions of shoppers around the U.S, who face soaring prices and shortages. What's going on?

Elevated egg prices are expected to persist throughout the year as flocks continue to get hit with highly pathogenic avian influenza, otherwise known as bird flu.

Egg prices across the country have reached a record high. It is becoming tougher for families to afford a carton of eggs. Karyn Rispoli, managing editor at Expana, said the bird flu is a contributing factor to the increase in prices.