Asimov dies at age 72 at New York University Hospital. At this time the cause of death is heart and kidney failure according to his brother Stanley. In 2004 Janet and Robyn Asimov reveal that Asimov’s death was caused by complications related to HIV. Asimov’s doctors had pushed the author to remain quiet about having contracted the illness from a blood transfusion during bypass surgery. Janet Asimov says of the discovery before a surgery:
The surgery was cancelled, and the doctors told us not to reveal Isaac’s HIV. I argued with the doctors privately about this secrecy, but they prevailed, even after Isaac died.