Thisyakorn is presently a Professor of Pediatrics and the Executive Director of Tropical Medicine Cluster at Chulalongkorn University, an advisor of Faculty of Tropical Medicine, Mahidol University; Department of Health, Bangkok Metropolitan Administration and Faculty of Medicine, Thammasat University.

Her additional positions include Council Member of World Society for Virology, Board Member of World Society for Pediatric Infectious Diseases, Executive Committee of International Society of Tropical Pediatrics, Past President of International Society of Tropical Pediatrics, Asian Society for Pediatric Infectious Diseases, Pediatric Society of Thailand as well as Pediatric Infectious Disease Society of Thailand.

In 1989, she received a Rockefeller grant for dengue research at the Centers for Diseases Control and Prevention in Atlanta and Scientific Awards in 1994 from the Elizabeth Glaser Pediatric AIDS Foundation for Pediatric HIV training at the National Institutes of Health in Bethesda. In 2000, under Professor Thisyakorn’s guidance as Chair of the medical committee on the Save a child’s life from AIDS project, the project was selected as one of the UNAIDS best practices in the year 2000. This project has contributed significantly to the recognition of Thailand by the World Health Organization as the first country in Asia to successfully eliminate mother-to-child transmission of HIV in 2015. For her contributions, she has received several awards including Woman of the Year from the Foundation for Thai Society, The Outstanding Asian Pediatrician from the Asia Pacific Pediatric Association and The Outstanding Woman in the International Stage/Network from Ministry of Social Development and Human Security on the occasion of the International Women’s day 2019.

Professor Thisyakorn has served as an editorial board of several medical journals and has contributed over 150 indexed publications to date.