Health officials are still trying to determine the source of a Salmonella outbreak in Vancouver, Washington, that has sickened more than 100 people.

Clark County Public Health reported 38 confirmed and 76 probable cases of salmonella as of Thursday afternoon, with calls continuing to trickle in as people hear about the outbreak, said Dr. Alan Melnick, Clark County health officer.

Health officials are still interviewing people who reported symptoms after eating at On the Border Mexican restaurant between Sept. 20 and Oct. 8, when officials closed the eatery to stop the spread of salmonella.

Most of the salmonella cases tied to the restaurant are among adult customers; five food handlers were also sickened. Eight people with salmonella have been hospitalized. As of Thursday, seven of the eight had been released from the hospital, Melnick said.

The restaurant reopened Monday afternoon.