Immediate threat of tainted romaine lettuce wilts as E.coli outbreak cause still unknown

iStock/Thinkstock(NEW YORK CITY) — Federal investigators have yet to determine the source of the ongoing E.coli outbreak that has so far left 172 people sick after eating romaine lettuce, but they have one glimmer of hope: lettuce wilts.

The fact that lettuce is perishable means that while investigators with the Center for Disease Control (CDC) haven’t yet figured out what caused the outbreak, the infected romaine from the Yuma growing region has now likely expired and is probably not on store shelves or in restaurant kitchens any longer.

CDC officials cited romaine’s 21-day shelf life as the reason why any of …read more