— — ! The Task of Isolating and Identifying Human Pathogenic Viruses Hideyuki KUBO Osaka City Institute of Public Health and Environmental Sciences: 8-34 Tojo-cho, Tennoji-ku, Osaka 543-0026, Japan Abstract There are many human infectious diseases derived from pathogenic viruses. In line with the infectious disease surveillance systems of Osaka City, the staff of our institute’s department of micr