(CNN/WKYT ) — A California-based company is recalling several cheese products linked to an outbreak of E. coli.
Sierra Nevada Cheese Company makes its products with raw milk. The company is recalling four types of its Graziers raw-milk cheese, including its medium cheddar, sharp cheddar, jalapeño Jack and Monterey Jack cheeses.

Investigators said 13 people in nine states have become sick.
The cheese products are sold around the country.

The company is telling consumers not to eat any of the recalled cheeses. People should either throw the cheeses out or return them to the store where they were bought for a refund.
