Over the weekend, the threat of salmonella triggered the recall of 10,000 cartons of organic eggs sold at Costco and whole cucumbers sold in 28 states.

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

Fresh cucumbers are the latest food safety recall. The Centers for Disease Control and Prevention and the U.S. Food and Drug Administration are warning consumers to check their counters and refrigerators for whole fresh American cucumbers after at least 68 people in 19 states became sick from salmonella.