PHOENIX -- Two different growers out of Salinas, California have recalled bagged lettuce and spinach that could contain harmful, and potentially deadly bacteria.
The recalled spinach is packaged under the brand names Private Selections and Marketside. They're 5 and 10-ounce clam shell packages with a best by date of May 25, 2012. Their UPC numbers are 0-11110-91128-5 and 6-8113132900-2.
No one has gotten sick.
Meanwhile, River Ranch Fresh Foods has expanded a voluntary recall to include Arizona, after routine sampling detected listeria contamination.
No illnesses have been reported in that case, either.
The bagged salads are sold under the names River Ranch, Farm Stand, Hy-Vee, Marketside, Shurfresh, The Farmer's Market, Cross Valley, Fresh n Easy, Promark, and Sysco.
The recalled retail and food service salad bags have "best by" dates between May 12 and May 29 or Julian dates of 118 and 125. The code date is typically located in the upper right hand corner of the bags.
Symptoms of listeria infection include high fever, headache and neck stiffness.
Health experts say the bacteria is potentially deadly for the very young, elderly, immuno-compromised, and pregnant women.
"It's always safer to rewash your bagged lettuce salad, because you never know what actually happened from the time it was completed to the time it reached your kitchen," says Joli Weiss an Outbreak Epidemiologist with the Arizona Department of Health Services.
Weiss says the Department only sees several listeria cases a year, but around 900 cases of salmonella.
Experts say you have to stay vigilant with produce, even after the recall - washing vegetables and the exterior of fruits like mangoes, watermelons and cantaloupe.
"When you're grocery shopping, make sure you separate your meats and your vegetables, you don't want to cross contaminate so don't put them in the same bag, store them on different levels of the refrigerator, usually the meats below the fruits and vegetables if possible," Weiss says.
If you have consumed some of the recalled lettuce and spinach, and experience symptoms, call your doctor immediately.