outbreak. eggs from two iowa farms were linked to a massive salmonella outbreak this past summer. as many as 1,600 americans were sickened. americans like 30-year-old sarah lewis. they thought they were going to have to do emergency bowel surgery. reporter: and 77-year-old carol lobato. my doctors told me that i almost certainly would have died without aggressive intervention. reporter: the victims appeared before congress, as did the owners of th two answer the question sedhe protection afforded m the fifth amendment of the constitution. reporter: the ceo of hillandale farms refused to answer questions. wright county egg chief jack decosta offered a seemingly heartfelt apology we apologize to everyone who may have been sickened by eating our eggs. i have prayed several times each day reporter: his son suggested their farm wasn t responsible. we view the most likely root cause of contamination to be the