Walmart, Wegmans and Albertsons stores have recalled cucumbers for possible contamination with salmonella. They were sold in 26 states, the FDA says.

In a filing posted by the Food and Drug Administration on Thursday, SunFed said the recalled cucumbers were sold between Oct. 12 and Nov. 26 and are being pulled from store shelves over possible contamination by the bacteria. Salmonella can cause fatal infections in young children, elderly people or other individuals with weakened immune systems.

At least 68 people have fallen ill in the outbreak believed to be linked to cucumbers sold in the United States and Canada, the Centers for Disease Control and Prevention said.