Respiratory tract infections in children

​Objectives in this STEPS-study substudy are: 

  • To determine the environmental and genetic risk factors for recurrent respiratory tract infections in children.
  • To determine the disease burden caused by rhinovirus, respiratory syncytial virus, influenza A and B viruses, and other respiratory viruses in young children in a community setting
  • To determine the effects of early virus infections and bacterial colonization on later health at 6 to 8 years of age. 
  • To characterize the interactive roles of viruses and bacteria in respiratory tract infections


  • Prospective follow-up of a child cohort with detailed clinical information enables longitudinal risk factor and disease burden determinations and sample collection for translational studies

Study group:

Group leader: Ville Peltola, MD, PhD, Professor of Pediatric Infectious Diseases, Turku University Hospital (

Group members: Laura Toivonen, MD, Sinikka Karppinen, MD, Lauri Ivaska, MD, Tamara Teros-Jaakkola, MD, Linnea Schuz-Havupalo, MD, Johanna Lempainen, MD, PhD

Major funders: Academy of Finland, Pediatric Research Foundation (Finland) and Turku University Hospital (EVO funding)


20014 Turun yliopisto, Finland
Tel. +358 29 450 5000

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