The exact cause of the food-borne illness remains under investigation.
The food was prepared by Roma Pizza and Stellato Ristorante, according to Facebook posts by the owners.
The restaurant was closed temporarily to allow for deep cleaning, staff training and official inspections
Waterford Township schools went to all-remote learning after 97 teachers got sick from a catered district lunch. Symptoms included nausea, diarrhea, vomiting and fatigue, health officials said at the time.
Camden County Health Department is investigating four clusters in the area that had ordered food from the restaurant, Dan Keashen, a county spokesman, told NJ Advance Media.
“We closed today for a total deep clean and sanitation to ensure the safety of everyone and to try and ease anyone’s mind,” Mariellen Kruckner-Stellato said in a Facebook post.
"On behalf of my husband Joe and I and everyone at Roma’s, we give our most sincerest get well wishes to the teachers, staff, students and families that have been affected by this terrible illness," she wrote. "35 years in the business and nothing like this has ever happened before."
The restaurant has reopened after correcting all issues identified by the health department, Keashen told NJ.com.
Click here to follow Daily Voice Washington Township and receive free news updates.