Egg prices have surged to a record high one month after bird flu was first detected in the chicken flock in Iowa, the nation's leading egg producer. Midwest large eggs reached $2.32 a dozen. That's a 95 percent increase in the month since bird flu first hit Iowa chickens. The previous record was $2.27 set in December. Eggs used to make ice cream, mayonnaise and other processed foods set a record Friday of $2.13 a dozen, up nearly 240 percent from the selling price in April, around the date Iowa's first chicken farm tested positive.