People have been infected with a strain of the bacteria called Salmonella Poona, after eating cucumbers from Mexico that were distributed in the U.S. by California company Andrew & Williamson Fresh Produce.

According to the CDC, on September 4, the company voluntarily recalled all cucumbers sold under the "Limited Edition" brand label during the period from August 1, 2015, through September 3, 2015, "because they may be contaminated with Salmonella."

States where people have been affected

Read more: Why you should stop drinking bottled water

What is Salmonella Poona?

What causes contamination?

Experts say contamination usually occurs when the outside of the cucumber comes in contact with fecal matter -- often from irrigation water or manure. But that doesn't mean that the inside of the cucumber is necessarily safe. Experts say it's always safer to assume the entire product is contaminated and to throw it out.

If you aren't sure where your cucumbers came from, the CDC says to call the store where you purchased them and ask. But if there is any doubt, throw them out! The CDC has more information on the outbreak here.

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