The investigation stems from an attack Sunday morning outside the Glassboro home of Kevin Tucker.
"The raccoon had a wobbly gait, was around during the daylight, going up to people," said Alexis Traynor, an environmental health specialist at the Camden County Health Department.
The victim said they were bitten while walking in the 400 block of W. Wayne Avenue and that the fox did appear to be sick.
The city's animal control is working closely with the university to locate and capture the raccoon(s), according to officials.
A woman was out with her dogs on Monday when she came face-to-face with a rabid raccoon. And within seconds, one of her animals was in a fight for survival.
This marks the first human case of the virus in Illinois since 1954, health officials said.