Dr. Nguyen To Nhu is a medical doctor and epidemiologist with over 26 years of expertise in managing health programs focused on combating infectious diseases in Viet Nam. Her technical expertise encompasses HIV, addiction treatment, disease surveillance, malaria, antimicrobial resistance, emergency operation centers, outbreak response, and the One Health approach. As PATH’s Program Director of Epidemic Preparedness and Response for Southeast Asia, Dr. Nhu oversees global health security projects and provides strategic guidance to the Ministry of Health and partners, focusing on strengthening health systems, improving diagnostics, and enhancing emergency preparedness. She is committed to promoting health equity, particularly for vulnerable populations, including those with HIV, drug dependency, and communities affected by emerging infectious diseases in remote areas. Her efforts include advancing novel malaria testing and treatment methods, such as point-of-care G6PD quantitative testing and Tafenoquine radical cure, ensuring that marginalized groups receive the care they need. Her contributions also extend to regional initiatives like the One Health for Cambodia (OH4CAM) feasibility study, aimed at driving significant health investments from 2025-2030 in Cambodia.