Love nuts? They're good for you — pistachios in particular are a great source of fiber — but not if they contain salmonella. California-based nut company Wonderful Pistachios is voluntarily recalling a limited number of in-shell and shelled pistachios due to a risk of salmonella contamination according to a company statement.

The pistachios were sold under the brand names Wonderful, Paramount Farms and Trader Joe's and sold in the U.S. and Canada, according to the Centers for Disease Control and Prevention (CDC).

Related: 9 Surprising Places Salmonella Bacteria Lurk

So far, 11 people from nine states have been sickened, including Washington, Arizona, North Dakota, Minnesota, Michigan, Alabama, Georgia, Virginia, and Connecticut. Two people have been hospitalized. No deaths have been reported. According to the CDC, Wonderful Pistachios are "a likely source of this outbreak." Its investigation is ongoing.

You can tell if a package is one that's been recalled by checking the 13-digit lot code, found on the bottom or back of the packaging, against this list of recalled products. Only the products with these lot codes are subject to recall.

The CDC recommends consumers avoid eating the recalled pistachios and discard of them immediately.

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Salmonella symptoms typically appear within 12 to 72 hours after exposure, according to the CDC. If you ate Wonderful pistachios and experienced diarrhea, fever or abdominal cramps after, contact your doctor.

You can return recalled products to the company via mail for a refund by sending the portion of the package that contains one of the affected lot codes. You can also return the product at the place of purchase for a full refund.

Consumers with questions can contact the company at 844-505-3844.

Related: Your Chicken May Soon Be Less Likely to Contain Salmonella

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Muriel Vega is a writer with a passion for budget travel and staying safe while abroad. A Georgia State University graduate, she has over 6 years of editorial experience and has written for The Guardian, The Atlantic, The Billfold, among other outlets. In her free time, you can find her baking pies, playing with her two dogs and cat, or planning her next vacation. She spends way too much time on Twitter, one of her favorite social media channels. Her favorite safety tip: Make sure you have all the necessary shots before you go abroad.