University of Otago - Department of Microbiology and Immunology, University of Otago - Department of Microbiology and Immunology, Fiji National University (FNU) - College of Medicine Nursing and Health Sciences, The University of Melbourne at the Peter Doherty Institute of Infection and Immunity - Microbiological Diagnostic Unit Public Health Laboratory, Fiji Centre for Communicable Disease Control, Fiji Centre for Communicable Disease Control, Fiji National University (FNU) - College of Medicine Nursing and Health Sciences, Fiji Centre for Communicable Disease Control, Fiji Centre for Communicable Disease Control, University of Melbourne - Peter Doherty Institute for Infection and Immunity, University of Queensland - Institute for Molecular Bioscience, ESR (Institute of Environmental Science and Research), Republic of Fiji Ministry of Health, University of Otago - Centre for International Health, Department of Preventive and Social Medicine, University of Otago, Dunedin, New Zealand and University of Otago - Department of Microbiology and Immunology