主题词：HIV Research and Treatment; HIV/AIDS Research and Interventions; HIV/AIDS drug development and treatment; Hepatitis C virus research; HIV-related health complications and treatments; Immune Cell Function and Interaction; Hepatitis B Virus Studies; Cytomegalovirus and herpesvirus research; HIV, Drug Use, Sexual Risk; Virus-based gene therapy research; HIV/AIDS Impact and Responses; Immunodeficiency and Autoimmune Disorders; Liver Disease Diagnosis and Treatment; T-cell and B-cell Immunology; Immunotherapy and Immune Responses; Adolescent Sexual and Reproductive Health; Herpesvirus Infections and Treatments; Ethics in Clinical Research; Diverse Scientific and Economic Studies; Reproductive System and Pregnancy; CRISPR and Genetic Engineering; Monoclonal and Polyclonal Antibodies Research; SARS-CoV-2 and COVID-19 Research; Viral Infections and Immunology Research; Pneumocystis jirovecii pneumonia detection and treatment