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Updated: Jul 5, 2026

Constructing Mutants in Serotype 1 Streptococcus pneumoniae strain 519/43
Published on: September 11, 2020
Sequence type and emm type diversity in Streptococcus pyogenes isolates causing invasive disease in Norway between
Roger Meisal1, E Arne Høiby, Ingeborg S Aaberge
1Department of Bacteriology and Immunology, Division of Infectious Disease Control, Norwegian Institute of Public Health, Nydalen, NO-0403 Oslo, Norway. dominique.caugant@fhi.no
Abstract:
The incidence of invasive group A streptococcal disease has increased in Norway since the 1980s. Analysis of 100 isolates recovered from 1988 to 2003 showed an increased genotypic diversity over time, while the prevalence of the strain that dominated in 1988, sequence type (ST)-28/emm-1, decreased. Necrotizing fasciitis was often associated with ST-15/emm-3.
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