Washington ? Federal health officials said Wednesday more illnesses and possibly more deaths may be linked to an outbreak of listeria in cantaloupe in coming weeks.

So far, the outbreak has caused at least 72 illnesses — including up to 16 deaths — in 18 states, making it the deadliest food outbreak in the United States in more than a decade.

The heads of the Centers for Disease Control and Prevention and the Food and Drug Administration said consumers who have cantaloupes produced by Jensen Farms in Colorado should throw them out. If they are not sure where the fruit is from, they shouldn’t eat it.

Neither the government nor Jensen Farms has supplied a list of retailers who may have sold the fruit. Officials say consumers should ask retailers about the origins of their cantaloupe. If they still aren’t sure, they should get rid of it.

“If it’s not Jensen Farms, it’s OK to eat,” said Thomas Frieden, director of the CDC. “But if you can’t confirm it’s not Jensen Farms, then it’s best to throw it out.”

Jensen Farms of Holly, Colo. says it shipped cantaloupes to 25 states, though the FDA has said it may be more, and illnesses have been discovered in several states that were not on the shipping list. A spokeswoman for Jensen Farms said the company’s product is often sold and resold, so they do not always know where it went.

The recalled cantaloupes may be labeled “Colorado Grown,” ”Distributed by Frontera Produce,” ”Jensenfarms.com” or “Sweet Rocky Fords.” Not all of the recalled cantaloupes are labeled with a sticker, the FDA said.

The company said it shipped out more than 300,000 cases of cantaloupes that contained five to 15 melons, meaning the recall involved 1.5 million to 4.5 million pieces of fruit.

The FDA said none of the cantaloupes had been exported, reversing an earlier statement that some of the tainted melons had been shipped abroad.