53 People in 9 States Sickened After Eating Raw Tuna

Health officials are investigating a salmonella outbreak likely linked to raw tuna that has sickened 53 people in nine states.
The California Department of Public Health said Thursday that 31 of the cases are there. No deaths have been reported.
The source of the outbreak is unknown, but most who fell ill reported eating sushi containing raw tuna.
It causes diarrhea, cramping and fever.
Health officials say the elderly, young children, pregnant women and people with weak immune systems should not eat raw fish or raw shellfish.