WASHINGTON -- As many as 16 people have died from possible listeria illnesses traced to Colorado cantaloupes, health officials say, a toll that would make it the deadliest food outbreak in more than a decade.

The Centers for Disease Control and Prevention said last week that 55 illnesses and eight deaths were linked to the outbreak. Since then, state and local health departments in Kansas, Nebraska, Texas and Wyoming have reported six additional deaths that may be linked.

Nine people died in an outbreak linked to salmonella-tainted peanuts almost three years ago. Deaths linked to the cantaloupes are expected to easily surpass that number.

Listeria is more deadly than more well-known pathogens like salmonella and E. coli, though those outbreaks generally cause many more illnesses.

It generally sickens only the elderly, pregnant women and others with compromised immune systems. The CDC said last week that the median age of those sickened was 78.

Dr. Robert Tauxe of the CDC says the number of illnesses and deaths will probably grow in coming weeks because the symptoms of listeria don't always show up right away. It can take four weeks or more for a person to fall ill after eating food contaminated with listeria.

The outbreak has been traced to Jensen Farms in Holly, Colo., which recalled the tainted cantaloupes earlier this month.

Suffolk County Sheriff Errol Toulon Jr. spoke with NewsdayTV's Ken Buffa about what life is like for the Gilgo Beach serial killer Rex Heuermann in jail. Credit: Anthony Florio; File Footage; Photo Credit: Newsday / James Carbone, John Paraskevas; AP / David Bookstaver, Clark County Sheriff's Office, Richard Drew, Mitchell Tapper, Don Ryan; Peconic River Sportsman’s Club / Kerry Goldberg

'He will be ... coming out of prison in a body bag' Suffolk County Sheriff Errol Toulon Jr. spoke with NewsdayTV's Ken Buffa about what life is like for the Gilgo Beach serial killer Rex Heuermann in jail.

Suffolk County Sheriff Errol Toulon Jr. spoke with NewsdayTV's Ken Buffa about what life is like for the Gilgo Beach serial killer Rex Heuermann in jail. Credit: Anthony Florio; File Footage; Photo Credit: Newsday / James Carbone, John Paraskevas; AP / David Bookstaver, Clark County Sheriff's Office, Richard Drew, Mitchell Tapper, Don Ryan; Peconic River Sportsman’s Club / Kerry Goldberg

'He will be ... coming out of prison in a body bag' Suffolk County Sheriff Errol Toulon Jr. spoke with NewsdayTV's Ken Buffa about what life is like for the Gilgo Beach serial killer Rex Heuermann in jail.

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