The Food and Drug Administration this week escalated a recall of 1.6 million cartons of eggs over potential salmonella contamination to its most serious classification. On Wednesday, the FDA designated the incident a "Class 1" recall, which the agency applies to product recalls "in which there is a reasonable probability that the use of or exposure to a violative product will cause serious adverse health consequences or death." The eggs were first recalled on July 22 by North Manchester, Indiana-based Midwest Poultry Services because they could be contaminated with salmonella. The eggs were sold under various brand names at retailers...