Dr. Werner Henle, 77, a noted virologist who helped identify the first virus associated with cancers in humans, died on June 7, 1987 at Bryn Mawr Hospital.  Dr. Henle was emirtus director of the Virus Diagnostic Laboratory at Children’s Hospital of Philadelphia.  With Dr. Gertrude Henle, his wife and research partner, he wom world-wide recognition for work in the fields of virology, immunology and viral oncology.   Among their contributions were the first convincing demonstration of the effectiveness of inoculation against influenza, the development of a rapid test to diagnose mumps in the first few days of illness and the evaluation of a vaccine that gives immunity against mumps.  The discovery that attracted the widest attention to their work came when they identified the first virus regularly associated with human cancers.  The discovery established a link between the Epstein-Barr virus, infectious mononucleosis, and Burkitt’s lymphoma, a cancer common in some parts of Africa, for which the Henle’s won the Bristol-Myers Award. Dr. Henle was elected a member of the National Academy of Sciences in 1975.