Milkshakes from a Tacoma burger joint tied to listeria outbreak that killed 3 people

Poorly cleaned ice cream machines at a Washington-based burger joint were linked to a listeria outbreak earlier this year that landed six people in the hospital, three of whom died. Two of those who were hospitalized told investigators they had milkshakes from the same restaurant before getting sick.

The Washington State Department of Health says it found the same strain of listeria in ice cream machines at a Frugals restaurant in Tacoma, Wash., that was responsible for hospitalizing six people during a foodborne listeriosis outbreak earlier this year. All six individuals, between 40 and 70, had underlying conditions that left them more susceptible to the disease.

No other Frugals restaurants are thought to be affected and the Tacoma location stopped using its two ice cream machines on Aug. 8, but listeria can take as long as 70 days to make a person sick. The health department said in a news release that it found listeria bacteria in all of the Frugals milkshake flavors.

Though most people who eat food contaminated with listeria won't get seriously ill, the department recommends those who are pregnant, 65 or older or have a weakened immune system call their doctor if they consumed a milkshake from the Tacoma restaurant between May 29, and Aug.7.

The restaurant said in a statement on Saturday that it is cooperating with the health department's investigation and is sending the two Tacoma site ice cream machines off for thorough cleaning and sanitization. And out of an abundance of caution, Frugals says it has shut down milkshake sales at all of its other restaurants and is having all of its ice cream machines tested.