- Affiliate Professor, Global Health
- Executive Director and Principal Investigator, Lighthouse Trust

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Professor Sam Phiri is a Clinician, Clinical Epidemiologist, and Principal Investigator for Lighthouse Trust in Lilongwe, Malawi with over 17 years’ experience of strategic HIV Program design and Implementation. As Executive Director, he provides strategic leadership to the Lighthouse. As a research scientist, he plays a leadership role in the design, implementation, and results dissemination of Implementation Science. Under his leadership, Lighthouse has been recognized as a World Health Organization Centre of Excellence in integrated HIV prevention, treatment and care. The Lighthouse innovations and initiatives are used to inform both national and international HIV- associated policies. He is a Professor in the Department of Medicine at University of North Carolina School Of Medicine at Chapel Hill and Department of Global Health at University of Washington, Seattle in USA and a Senior Lecturer, Department of Public Health, College of Medicine, School of Public Health and Family Medicine, University of Malawi, Malawi. His interests are in integration of HIV Prevention, Treatment, Care and Support programs including TB/HIV integration, Family Planning, and NCDs.
- PhD (London School of Hygiene & Tropical Medicine (UK))
- MSc (London School of Hygiene & Tropical Medicine (UK))
- Cervical Cancer
- Clinical Mentoring
- Education and Training
- Epidemiology
- Family Planning
- Health Systems Strengthening and Human Resources Development
- HIV/AIDS
- Implementation Science
- Quality Improvement
Krashin JW, Haddad LB, Tweya H, Chiwoko J, Ng'ambi W, Samala B, Chaweza T, Tang JH, Hosseinipour MC, Phiri S. Factors associated with desired fertility among HIV-positive women and men attending two urban clinics in Lilongwe, Malawi. PLoS One. 2018 Jun 13;13(6):e0198798
Sam Phiri, PhD, MSc, DCM, Hannock Tweya, PhD, MSc, Monique van Lettow, PhD, Nora E. Rosenberg, PhD, MSPH, Clement Trapence, BSc, Atupele Kapito-Tembo, MBBS, MPH, PhD, Blessings Kaunda-Khangamwa, MPH, BSc, Florence Kasende, BSc, Virginia Kayoyo, BSc PH, Dip Nursing, Fabian Cataldo, PhD, MA, MRes, Christopher Stanley, MPH, BSc, Salem Gugsa, MPH, BSc, Veena Sampathkumar, MPH, Erik Schouten, MD, MSc, Levison Chiwaula, PhD, MA, Michael Eliya, MPH, Dip Nursing, Frank Chimbwandira, MBBS, MPH, Mina C. Hosseinipour, MD, MPH, and the PURE Malawi Consortium. Impact of Facility- and Community-Based Peer Support Models on Maternal Uptake and Retention in Malawi’s Option B+ HIV Prevention of Mother-to-Child Transmission Program: A 3-Arm Cluster Randomized Controlled Trial (PURE Malawi). J Acquir Immune Defic Syndr 2017; 75:S140–S148
Mina Hosseinipour, MD, MPH, Julie A. E. Nelson, PhD, Clement Trapence, BSc, Sarah E. Rutstein, PhD, Florence Kasende, BSc, Virginia Kayoyo, BSc, Dip Nursing, Blessings Kaunda-Khangamwa, MPH, BSc, Kara Compliment, MLS (ASCP)CM, Christopher Stanley, MSc, BSc, Fabian Cataldo, PhD, MA, MRes, Monique van Lettow, PhD, Nora E. Rosenberg, PhD, Hannock Tweya, PhD, MSc, Salem Gugsa, MPH, BSc, Veena Sampathkumar, MPH, Erik Schouten, MD, MPH, Michael Eliya, MPH, Dip Nursing, Frank Chimbwandira, MBBS, MPH, Levison Chiwaula, PhD, MA, Atupele Kapito-Tembo, MBBS, MPH, PhD, Sam Phiri, PhD, MSc, DCM, and the PURE Malawi Consortium. Viral Suppression and HIV Drug Resistance at 6 Months Among Women in Malawi’s Option B+ Program: Results From the PURE Malawi Study. J Acquir Immune Defic Syndr 2017; 75:S149–S155
S. Phiri, P. Y. Khan, A. D. Grant, D. Gareta, H. Tweya, M. Kalulu, T. Chaweza, L. Mbetewa, H.Kanyerere, R. Weigel, C. Feldacker. Integrated tuberculosis and HIV care in a resource-limited setting: experience from the Martin Preuss centre, Malawi. 2 AUG 2011 1365-3156.
Phiri S, Neuhann F, Glaser N, Gass T, Chaweza T, Tweya H; Lighthouse Group. The path from a volunteer initiative to an established institution: evaluating 15 years of the development and contribution of the Lighthouse trust to the Malawian HIV response. BMC Health Serv Res. 2017 Aug 9;17(1):548