Applicants from United States (US), European Union (EU), United Kingdom (UK), Kenyan, South African, and Zimbabwean institutions are invited to apply to this request for applications (RFA) sponsored by MATRIX (Microbicide R&D to Advance HIV prevention Technologies through Responsive Innovation and Excellence): a USAID project to advance the research and development of innovative HIV prevention products for Women: prevention challenges: overcoming impediments to HIV prevention. The objective of this funding opportunity is to support the development of solutions to specific challenges facing the field of HIV prevention. Challenge solutions can stimulate the development and implementation of effective HIV prevention strategies that meet the diverse HIV prevention needs of Adolescent Girls and Young Women (AGYW), Pregnant and Breastfeeding Women (PBFW), and Female Sex Workers (FSWs). Country: United States (US), European Union (EU), United Kingdom (UK), Kenya, South Africa, and Zimbabwe. (Ausschreibung №82237740de)