Milwaukee - The federal Centers for Disease Control and Prevention are looking into whether two cases of salmonella food poisoning in Wisconsin might have come from eating raw tomatoes.

Health officials said earlier this week that a salmonella outbreak in nine states had been linked to uncooked tomatoes. The CDC said Friday it was looking into whether raw tomatoes were responsible for cases in Wisconsin, Oklahoma and Virginia.

In Wisconsin, one adult from Milwaukee County and another person from Pepin County have been sickened.

The U.S. Food and Drug Administration has said the outbreaks in New Mexico and Texas appear tied to some types of raw red tomatoes and products containing them. It has suggested people in those states may want to eat other types of tomatoes.