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Beres, Stephen B. and Olsen, Randall J. and Long, S. Wesley and Langley, Ross and Williams, Thomas and Erlendsdottir, Helga and Smith, Andrew and Kristinsson, Karl G. and Musser, James M. (2024) Increase in invasive Streptococcus pyogenes M1 infections with close evolutionary genetic relationship, Iceland and Scotland, 2022 to 2023. Eurosurveillance, 29 (13): 2400129. ISSN 1560-7917