TUCSON, Ariz. - Arizona health officials are warning of an outbreak of a contagious disease.
So far this year the state has seen more than 200 cases of Hepatitis A.
There have been some cases in Phoenix, but most are here in Tucson.
The deputy director of the Pima County Health Department says there's one very effective was to prevent the disease.
The populations most effected by this outbreak are the homeless, and people who use illegal drugs.
