Prof. Huijun Guo is a scholar at Henan University of Chinese Medicine, Zhengzhou, China, with recognized expertise in infectious diseases, epidemiology, and evidence-based clinical research, particularly focused on HIV, chronic hepatitis B, Helicobacter pylori infection, and immune-related disorders. He has authored 54 Scopus-indexed publications, which have collectively received 272 citations, reflecting the steady academic influence of his work, and holds an h-index of 10. His research is characterized by high-impact systematic reviews, meta-analyses, and longitudinal cohort studies published in leading international journals such as BMJ Open, Frontiers in Medicine, and the World Journal of Gastroenterology. Prof. Guo has collaborated extensively with a broad international network of researchers, contributing to translational insights that inform clinical practice and public health policy. His work supports improved disease management strategies and strengthens evidence-based healthcare decision-making with clear societal relevance.