From humble beginnings to becoming one of Singapore’s most respected infectious disease experts, Prof Leo Yee-Sin has dedicated more than three decades to strengthening Singapore’s infectious disease preparedness and response.
She played a pivotal role in the nation’s fight against SARS, H1N1, dengue and COVID-19, while also leading the establishment and development of the National Centre for Infectious Diseases (NCID). Notably, during the COVID-19 pandemic, her calm, evidence-based communication became a source of reassurance for many Singaporeans.
Her recently published book, A Long Vigil, offers a deeply personal reflection on her journey — from her childhood experiences to the challenges she encountered throughout her career — and how these shaped her values of resilience, compassion, and striving always to do her best while embracing the present moment.
We thank Prof Leo for her outstanding contributions to public health in Singapore, and for continuing to inspire future generations of public health leaders.