The price of eggs at U.S. grocery stores has climbed to a record high, nearly doubling from a year ago, as outbreaks of bird flu have led to shortages by wiping out millions of hens.

For Brian Kreher, a fourth-generation farmer in the small town of Clarence, New York, the latest outbreak of bird flu has meant many sleepless nights. He considers his 18-acre farm one of the lucky ones.

Egg prices in the U.S. have hit record highs as a severe avian flu outbreak disrupts supply, driving inflation in food costs. With a 15% surge in egg prices in January alone, consumers and businesses alike are feeling the strain.