11 counties have been affected by a salmonellosis outbreak that has sickened at least 34 people. The state Department has linked the outbreak to tainted produce sold at more than a dozen Sheetz convenience stores in Pennsylvania.

Sheetz customers who ate store-prepared deli sandwiches or salads between July 2 and 8 became sick. Symptoms of diarrhea, fever and abdominal cramps hit 12 to 72 hours after they were infected.

The tainted produce may have been plum tomatoes and was packaged in individual servings by a food distributor, according to a report by Michael Hasch, Jennifer Reeger and Karen Roebuck.