Walmart, Wegmans and Albertsons stores have recalled cucumbers for possible contamination with salmonella. They were sold in more than half of states.

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.

Tennessee is one of 26 states that are part of a voluntary recall of cucumbers due to possible salmonella contamination. Here's what to know