The U.S. Food and Drug Administration and the Centers for Disease Control and Prevention are investigating a multistate outbreak of salmonella typhimurium infections linked to cucumbers, the agencies said on Monday.

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

Cucumbers shipped to the U.S. and Canada — and organic eggs sold in 25 Costco stores in five southern U.S. states — have been recalled because of potential salmonella contamination

Cucumbers from SunFed Produce have been recalled after tests showed the produce could be linked to a salmonella outbreak in several states.

A salmonella outbreak that may be linked to cucumbers has sickened at least 68 people across 19 states, according to federal health officials. At least 18 people have required treatment at hospitals,

Cucumbers distributed to more than two dozen US states and Canada are being recalled after 68 reported salmonella infections. Health agencies are warning that the contaminated cucumbers may still be in people’s refrigerators and should not be eaten.