Elite Journal of Immunology. Volume 2 Issue 7(2024), Pp. 51-62 https://epjournals.com/journals/EJI Citation: Obeagu EI, Akinleye CA, Edoho SH. Strategies of Immunity: CD4/CD8 Ratios in HIV Defense Mechanisms. Elite Journal of Immunology, 2024; 2(7): 51-62 1 Strategies of Immunity: CD4/CD8 Ratios in HIV Defense Mechanisms * Emmanuel Ifeanyi Obeagu 1 , Callistus Adewale Akinleye 2 and Sussanah Henry Edoho 3 1 Department of Medical Laboratory Science, Kampala International University, Ishaka, Uganda, ORCID: 0000-0002-4538-0161 2 Department of Community Medicine, Osun State University, Osogbo, Nigeria, ORCID: 0000- 0003-3778-3638 3 School of Nursing Science, Kampala International University, Ishaka, Uganda. * Corresponding authour: Emmanuel Ifeanyi Obeagu, Department of Medical Laboratory Science, Kampala International University, Uganda, emmanuelobeagu@yahoo.com, ORCID: 0000-0002-4538-0161 Abstract The CD4/CD8 T-cell ratio is a crucial immunological marker in understanding the immune response to HIV infection and guiding therapeutic strategies. This review explores the significance of CD4/CD8 ratios in HIV defense mechanisms, highlighting their role in immune surveillance, disease progression, and treatment outcomes. It provides insights into the mechanisms that influence CD4/CD8 ratio changes during HIV infection, including viral dynamics and immune activation. By unpacking the complexities of CD4/CD8 dynamics, this article aims to offer a comprehensive understanding of how monitoring and managing this ratio can enhance immune resilience in HIV-infected individuals. Through a detailed analysis, this review emphasizes the importance of the CD4/CD8 ratio as a predictor of immune recovery and ART efficacy. Higher CD4/CD8 ratios are associated with better clinical outcomes, while persistently low ratios may indicate inadequate immune restoration despite effective viral suppression. The findings underscore the need for personalized medicine approaches that incorporate CD4/CD8 ratio monitoring, enabling healthcare providers to tailor treatment strategies to individual patient profiles and improve long-term health outcomes. Keywords: HIV, CD4/CD8 ratio, immune response, immune resilience, antiretroviral therapy Introduction HIV (Human Immunodeficiency Virus) continues to pose a significant global health challenge, with millions of individuals affected worldwide. Despite advancements in antiretroviral therapy (ART), the virus remains a formidable adversary due to its ability to evade the immune system and