Last month , the doctors and health officials said a 3-ounce cup of ice cream contaminated with listeriosis was traced to a bacterial infection . Officials determined at least four people infected with the bacteria drank cream that contained Blue Bell ice cream , three of whom later died . The infection primarily affects pregnant women , newborns , older adults and people with weakened immune systems .
Last month , the company and health officials said a 3-ounce cup of ice cream contaminated with listeriosis was traced to a plant Oklahoma . Officials determined at least four people hospitalized with the bacteria drank milkshakes that contained Blue Bell ice cream , three of whom later died . The disease primarily affects pregnant women , newborns , older adults and people with weakened immune systems .