A Clark County Public Health spokesman says the number of salmonella cases linked to a Vancouver, Wash., restaurant continues to climb.

Spokesman Don Strick tells The Columbian (http://is.gd/fzu3DR) that the number of people sickened after eating at On the Border has now reached 13 confirmed and 33 probable cases. Most of the ill are adults.

Strick says three people have been hospitalized and two of them have since returned home.

Health officials are still trying to determine the source of the bacteria. They closed the restaurant temporarily on Tuesday as a precaution.

All but one case involves customers who visited the restaurant between Sept. 20 and Oct. 8. Strick says one restaurant employee has also fallen ill.

Symptoms include fever, chills, diarrhea and abdominal discomfort and typically arrive within three days of exposure. Most people recover without medication.

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Information from: The Columbian, http://www.columbian.com