The research component of the Ndola Demonstration Project (NDP) was conducted by Horizons, a USAID-funded global HIV/AIDS operations research project implemented by the Population Council. Horizons’ principal investigator for the NDP was Sam Kalibala. Other Horizons team members who contributed to this report (listed alphabetically) include Margaret Dadian, program associate; Julie Denison, program fellow; Scott Geibel, data analyst; Winnie Lubasi, administrative assistant; Norah Omenda, administrative assistant; Naomi Rutenberg, director of research; and Katie Schenk, program associate. .