Clifford Castleberry – Program Associate
(he, him, his)

Clifford Castleberry began serving in community health out of a desire to be a resource for individuals who are often overlooked and underserved in their communities. His experience includes spearheading the HIV/STD testing component of a community-based program, assisting clients with identifying and overcoming barriers through health navigation, and linkage to care coordination. He received a B.S. in Biology from Xavier University of Louisiana, earned a Graduate Certificate in Public Health with a focus on HIV/AIDS from the University of Florida, and is currently working toward his M.S. in Biology from Texas Southern University.

Marvell L. Terry II – Senior Program Manager
(he, him, his)

Marvell L. Terry II is a public health strategist, community builder, and thought leader. Marvell is a native of Memphis, TN; and has lived in Washington, DC; Prince George’s County, Maryland; and currently reside in Atlanta, GA.

The genesis of Marvell’s work began as an early intervention specialist (EIS) at a children’s hospital in Memphis and a federally qualified healthcare center (FQHC), linking newly diagnosed individuals into care or finding those who have not been adherent to their healthcare plan. Subsequently, Marvell’s work can speak to his passion locally, regionally and nationally. Marvell is the founder of the annual Saving Ourselves Symposium (SOS), a convening for Black LGBTQ individuals living in the South focused on health, wellness, and social injustices of this community; and founder of The Red Door Foundation, a non-profit purposed to fight for the health outcomes of Black gay men in the Mid-South. Marvell is a past Organizing Committee Member of the Young Black Gay Men’s Leadership Initiative, and a AVAC PxRoar Fellow.

Marvell’s published work “Prevalence and Correlates of HIV-Risk Behaviors among Homeless Adults in a Southern City” can be found in the Journal of Health and Disparities Research and Practice (Spring 2014, Volume 7). Marvell is currently a student at Bowie State University.

Dr. April J. Bell – Evaluator for the Southern HIV Impact Fund
(she, her, hers)

Dr. April J. Bell has a passion for positive reproductive health and a commitment to work that prioritizes Black people.  A veteran global health professional and epidemiologist, she spent 10 years at the Centers for Disease Control and Prevention working in a variety of capacities, including bioterrorism, HIV, foodborne diseases, and reproductive health in the United States and in several sub-Saharan African countries, including Ghana, Kenya, Tanzania, Uganda, Madagascar, and Malawi. Born and raised in Indiana, she received her BA in Human Biology from Stanford University and her MPH with a dual concentration in Epidemiology and Social and Behavioral Sciences from the Indiana University (IU) School of Medicine. She received her PhD in Epidemiology from the IU School of Public Health and is currently the Director of the Bell Consulting Group, LLC. Dr. Bell has served as a consultant to government agencies, healthcare organizations, non-profit organizations, and businesses to evaluate programs with the aim of improving community health outcomes.

Vienna Mbagaya – Evaluator for iFORWARD, an initiative of the Southern HIV Impact Fund
(she, her, hers)

Vienna Mbagaya has over a decade of experience in supporting public and private organizations at the international, federal, state, and community levels. Her work has led to opportunities for innovative research in the areas of COVID-19, HIV/AIDS, malaria, reproductive health and social behavioral health. Her expertise includes infectious disease epidemiology, behavioral health surveillance, clinical research coordination, and program evaluation. She holds a master’s degree in Epidemiology & Biostatistics from George Washington University School of Public Health & Health Services, and a bachelor’s degree in Biology from Boston College.