ACKNOWLEDGEMENT
This study was fully funded by International Training and Research in Environmental and Occupational Health (ITREOH, NIH Fogarty Grant: D43 Twoo7849), Graduate School of Chulalongkorn University, and partially supported by the higher education research promotion and national research university project of Thailand, office of the higher education commission (AS581A). Funding was made available under the Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education (Project AS1148A). The author wished to express sincere thanks to the local authorities for their kind support and good collaboration and also express thanks to the National Center for Laboratory and Epidemiology in Vientiane for their contribution on providing the important information of human anthrax cases.