DENVER - 21 people have now died from contaminated cantaloupes.
The melons have a form of bacteria called listeria.
The Centers for Disease Control and Prevention now says at least 109 cases have been reported in 24 states.
More reports could come in because the disease can take up to two months to develop in a person.
This listeria outbreak is the deadliest food-borne illness of its kind in the United States since 1998.
The cantaloupe grower has recalled its melons and they should be off store shelves by now.
Health officials say refrigeration or water will not kill the bacteria; instead the melons should be thrown out.
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