A Cornell University student — one of 520 diagnosed with influenza-type illness in the last three weeks — yesterday died of complications related to swine flu, school officials said.

It was unclear whether Warren Schor, 20, an economics and management major from Clinton Corners, in Dutchess County, had any pre-existing conditions.

Cornell health officials said most students who have gone to the campus infirmary with flu symptoms proved to have a mild form of the illness and have recovered fully.