Finnish Institute for Health and Welfare (THL) - Infectious Disease Control and Vaccinations Unit, Finnish Institute for Health and Welfare (THL) - Infectious Disease Control and Vaccinations Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit, City of Helsinki - Health Stations and Internal Medicine Clinic, Social and Health Care Sector, Finnish Institute for Health and Welfare (THL) - Department of Public Health and Welfare and Finnish Institute for Health and Welfare (THL) - Expert Microbiology Unit