It's been several weeks since a massive recall pulled romaine lettuce off store shelves across the country -- so, is it safe to eat again?

The Food and Drug Administration says yes, as long as you know where it was grown. The FDA says only six counties in California are linked to the current outbreak of E. coli. 

Here's what you should look for: If the leafy greens were harvested in Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz or Ventura -- don't eat them! But romaine lettuce grown anywhere else is believed safe, the FDA says. 

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, and which specific grower is behind the recall. Until then -- they warn that if you don't know where the lettuce was grown-- you shouldn't put it on your plate. 

Any lettuce sold at stores should be labeled with its origin, so check before you buy.