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Invasive Group A Streptococcal Infections in Indigenous New Zealanders With Type 2 Diabetes

  1. Susan Jack4
  1. 1Microbiological Diagnostic Unit Public Health Laboratory, Doherty Institute for Infection and Immunity, University of Melbourne, Victoria, Australia
  2. 2Institute of Environmental Science and Research Ltd, Porirua
  3. 3School of Biological Sciences and Maurice Wilkins Centre, University of Auckland
  4. 4Department of Preventive and Social Medicine, University of Otago, Dunedin, New Zealand
  1. Correspondence: D. A. Williamson, Microbiological Diagnostic Unit Public Health Laboratory, 792 Elizabeth Street, Doherty Institute, University of Melbourne, Victoria, Australia, 3000 (deborah.williamson{at}

To the Editor—We read with great interest the article by Langley et al, which highlights the potential contribution of diabetes and obesity to adverse outcomes in invasive infections caused by group A Streptococcus (GAS) [1]. We recently assessed the trends and demographics of invasive GAS (iGAS) infections across the entire New Zealand population, and demonstrated that the overall incidence of iGAS infections (6.1/100 000 population) was among the highest reported in the developed world [2]. Moreover, the incidence of iGAS infections was disproportionately high in indigenous New Zealanders (Māori) and Pacific populations, with rates approximately 3 and 7 times as high, respectively, compared with European patients [ …


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