Weerachai Saijuntha is Associate Professor of Genetic at the Faculty of Medicine, Mahasarakham University. His research interests include the molecular systematic and population genetic of terrestrial animals, parasites, and vectors in Southeast Asia, main focused on pathogenic parasites and their snail intermediate hosts. He has been active in genetic variation research of medially important trematodes and the bithyniid snails for 15 years and has published over 90 peer reviewed original research articles, reviewer articles, and book chapters. Resulting from this research, he has receiving a number of national and international awards for his work.