After that massive romaine lettuce recall recently due to an E. coli outbreak, many are wondering if it's safe to eat the vegetable again.

The U.S. Food and Drug Administration says yes, but only if you know where it was grown.

There were only six counties in California where the outbreak was linked to. So be on the lookout for the leafy greens harvested in Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz or Ventura.

If the lettuce comes from any of these places, don't eat it. But romaine lettuce grown anywhere else is believed to be safe, according to the FDA.

To date, 43 people have been infected with E. coli in 12 states, including 16 who have been hospitalized.

Federal health officials are still investigating the outbreak deciding which specific grower is behind the recall.

Until then, they are warning that if you don't know where the lettuce was grown, you probably shouldn't chance it.

Any lettuce sold at stores will have a label identifying its origin, so check before you buy.

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