Doctor of Medicine, University Helsinki, 1975. Doctor of Philosophy, University Helsinki, 1983.
General practitioner Health Center, Pielavesi, Finland, 1976-1979. Resident in pediatrics University Center Hospital, Helsinki, 1979-1984. Instructor to assistant professor University Helsinki, 1985-1987.
Assistant chief pediatrics Aurora Hospital, Helsinki, 1987-1991. Head department epidemiology, infectious disease National Public Health Institute, 1989-1996, research professor, director division infectious diseases, head vaccine, 1996-2000. Corporation vice president clinical and medical department Aventis Pasteur Groups, Lyon, France, since 2000.
Secretary expert groups Ministry Social Affairs and Health, Helsinki, 1987-1999.
Married Raila Korhonen. Children: Jaakko, Elina.