Increase in invasive group A streptococcal infections (iGAS) in children and older adults, Norway, 2022 to 2024.
Beatriz Valcarcel Salamanca, Pascale Renée Cyr, Yngvild Emblem Bentdal, Sara Viksmoen Watle, Astrid Louise Wester, Åse Marie Wikman Strand, Håkon Bøås
Author Information
Beatriz Valcarcel Salamanca: Department of Infection Control and Vaccines, Norwegian Institute of Public Health, Oslo, Norway.
Pascale Renée Cyr: Department of Infectious Disease Registries, Norwegian Institute of Public Health, Oslo, Norway.
Yngvild Emblem Bentdal: Department of Infection Control and Vaccines, Norwegian Institute of Public Health, Oslo, Norway.
Sara Viksmoen Watle: Department of Infection Control and Vaccines, Norwegian Institute of Public Health, Oslo, Norway.
Astrid Louise Wester: Department of Bacteriology, Norwegian Institute of Public Health, Oslo, Norway.
Åse Marie Wikman Strand: Department of Infectious Disease Registries, Norwegian Institute of Public Health, Oslo, Norway.
Håkon Bøås: Department of Infection Control and Vaccines, Norwegian Institute of Public Health, Oslo, Norway.
At the end of 2022 and most notably during the first half of 2023, the number of invasive group A streptococcus (iGAS) notifications increased in Norway, largely affecting children younger than 10 years, as observed in several other countries. Following this atypical season, a new surge in the number of iGAS notifications began in December 2023 and peaked between January and February 2024, now particularly affecting both children younger than 10 years and older adults (70 years and above).
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Humans
Norway
Streptococcal Infections
Streptococcus pyogenes
Aged
Child, Preschool
Child
Male
Female
Middle Aged
Adolescent
Incidence
Seasons
Aged, 80 and over
Infant
Adult
Age Distribution
Young Adult
Disease Notification
Population Surveillance
