Government officials are investigating a listeria outbreak that has been linked to eating soft cheeses, CNN reports. The CDC announced that an outbreak that has affected people across the country, and consumers should throw away a few types of soft cheese: ani, feta, Middle Eastern string cheese, and nabulsi.

Twenty-four people in nine states have been infected with one of several closely related strains of listeria since August 2010. Most were in California, but others were in Colorado, Illinois, Massachusetts, Michigan, New York, Ohio, Tennesee, and Washington. Twenty-one patients were hospitalized, one had a miscarriage, and one patient died.

Listeria can cause symptoms such as fever, headache, nausea, and diarrhea, but can lead to more serious symptoms in children, elderly people, and pregnant women. Though there's no definite news about the cause of this listeria, 18 of the 22 people who gave the CDC information reported eating soft cheese before developing symptoms. 

Four of those patients reported eating cheese from Karoun Dairies, but no other brand appeared more than once in their results. On Wednesday, Karoun Dairies voluntarily recalled products under the following brand names: Karoun, Arz, Gopi, Queso Del Valle, Central Valley Creamery, and Yanni. Customers who have purchased these products can call 1-866-272-9393 or read their full announcement for more information.