Dr. Nagi Ahmed AlHaj is currently working as Associate Professor of Medical Microbiology & Molecular Biology at Medical Microbiology Faculty Medicine and Health Sciences, Sana’a University, Yemen. He has completed his Medical Microbiology and Molecular Biology. He has completed his Postdoctoral Fellow in Drug Delivery Nanotechnology from Sanaa University, Yemen. He is also serving as member of American Society for Microbiology, Consultant of Molecular &Genetic Diagnosis Center, Head of Infection control and Prevention Committee, and Head of Scientific Committee. His main area of interest focuses on Biomedical Sciences and Molecular Sciences. His area of expertise includes Molecular Biology, Medical Microbiology, Drug Delivery Nanotechnology, Natural Products, Epidemiology, Infection Control, Mycology, Biotechnology, Bacteriology, Solid lipid nanoparticles and Nanostructure lipid carrier, From Amrine, Statistics, Guidelines, and Parasitology. He has 7 publications in journals.