1. Central Department of Microbiology, Tribhuvan University, Kirtipur, Kathmandu, Nepal;
2. Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand;
3. Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom;
4. Mahidol-Oxford Tropical Medicine Research Unit (MORU), Faculty of Topical Medicine, Mahidol University, Bangkok, Thailand;
5. Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand;
6. Epidemiology and Diseases Control Division (EDCD), Department of Health Service, Ministry of Health and Population, Teku, Kathmandu, Nepal;
7. The Royal Institute, Grand Palace, Bangkok, Thailand