Story highlights Cases have turned up in Colorado, Montana, Utah and Washington

If you have chicken salad with item number 37719 on the container, throw it away

(CNN) Health investigators confirm a handful of cases of E. coli have been linked back to chicken salad sold at Costco.

Nineteen people have been infected in seven states, according to the Centers for Disease Control and Prevention.

The majority of the cases have turned up in four Western states. So far, five people have been hospitalized and two have developed a type of kidney failure called hemolytic uremic syndrome. No one has died.

Four cases of E. coli were confirmed in Colorado , where one person was hospitalized. All four people have recovered, according to the Colorado Department of Public Health and Environment.

Another case in Washington was not as serious. The person from King County was not hospitalized, according to the Washington State Department of Health.