They have not been on campus since March 13.
The staff member was known to be on campus only on March 12.
The university is notifying those who came into contact with the part-time contractor.
The man was in his 60s and had an underlying medical condition.
It opened three cases in 2017.
The suspected cause in most of the cases was traced to Moby Dick House of Kabob.
"When They See Us" will highlight injustice these young boys of color experienced in our criminal justice system.