Dorothy Mbori-Ngacha is a medical epidemiologist with specialist training in paediatrics, infectious disease and child health. She is a public health professional with 20 years’ experience in academia, public sector work, the NGO community and international organisations with specific interests and experiences in Child Health and Paediatric HIV interventions. Mbori-Ngacha’s research area is in the field of PMTCT and Paediatric HIV. She has extensive background in the design, implementation and evaluation of HIV/AIDS programmes in resource-constrained settings. She also has experience in working with Ministries of Health in up-scaling effective HIV/AIDS interventions and in establishing strategic partnerships. In her current role as the Senior HIV Specialist, she leads and supports the work of UNICEF in Nigeria. She supports efforts to reduce the number of paediatric and adolescent HIV infections, increase the proportion of HIV-positive women and infants receiving antiretroviral drugs, and increase the proportion of children and adolescents receiving treatment for HIV and AIDS. Mbori-Ngacha is also responsible for fostering inter-agency collaboration within the UN and with other key stakeholders. She has served on several DSMBs and sits on a number of national and international advisory committees related to her expertise.