Dr. M. Shahid, MBBS, MD, PhD., FNZIMLS (New Zealand), is Associate Professor in the Department of Microbiology of J.N. Medical College & Hospital, Aligarh Muslim University, India. His field of interest and research is confined to mechanism and resistance to beta-lactam antibiotics, with special interest in CTX-M and AmpC β-lactamases, plasmid-mediated drug resistance, indigenous drugs, and mycological studies. He also has research experience on human fungal pathogens such as Aspergillus and Candida species. His work on Aspergillosis in patients suffering from bronchogenic carcinoma has received high acclaim and recognition in international scientific community. Moreover, his group is working in the field of histamine-research and produced some pioneer researches related to H1–H4 receptors and their agonists/antagonists. Dr. Shahid has published more than 80 research papers in reputed journals, and has 6 books and more than 18 book chapters to his credit. He is presently the member of many scientific bodies, both international and national. He is currently serving as member of the editorial board and reviewer panel of various international journals/publication houses, including “The Lancet” and “The Lancet Infectious diseases”, and also those of Bentham Science Publications, USA, and Global Science Books, UK. He has also worked as an Associate Professor in the College of Medicine, King Faisal University, Al-Hassa, Kingdom of Saudi Arabia ; Section of Immunity & Infection, The Medical School, University of Birmingham; and NHS Heartlands Hospital, Birmingham, United Kingdom. At present, he is serving the Department of Microbiology, Immunology & Infectious diseases of the College of Medicine & Medical Sciences, Arabian Gulf University Bahrain as Associate Professor.