CLEVELAND, Ohio – A Northeast Ohio biotech company and Purdue University researchers didn’t intend to develop a rapid diagnostic test for the coronavirus and other pathogens when they began working together earlier this year. The two partners were focused on another issue before the pandemic struck: food safety. IdentifySensors Biologics, of Shaker Heights, was founded on technology developed by its parent company to detect spoilage and pathogens in food. Early this year, the company teamed up with Purdue researchers to develop a way to test fruits and vegetables for pathogens like E. coli, listeria and salmonella, founder and CEO Dr. Gregory Hummer said.