Bowman says he wants to let the RCMP finish their investigation and depending on the results, all options including an inquiry are on the table.
The university said 44 people became ill with the gastrointestinal virus on Monday.
Giordano, 52, was released from prison in December with conditions to stay in a Montreal halfway house after serving two-thirds of a 15-year prison sentence.
Tim Duboyce says the Calgary-based firm believed issues surrounding the province's review of the cross-Canada oil pipeline had long been resolved.
The premiers of Canada's two most populous provinces have joined forces to push for federal help for Bombardier's CSeries aircraft.
Police had asked the public to stay away from a downtown area that was blocked to traffic