It’s suspected the restaurant's ice cream machines were not being properly cleaned.
Frugals stopped using the machines ten days ago, but Listeria can sicken people up to 70 days after consuming the bacteria.
Symptoms are similar to the flu.
Contaminated milkshakes from Tacoma restaurant suspected of killing 3 people.
Health investigators say they were in compromised health when they drank the shakes from Frugals on Pac Ave S.
3 other people got sick with listeria.