Dr. V. Stalin Raj is a virologist with a long engagement in virus discovery and virus characterization. He has 19 years of experience in virology research. His research focuses on the discovery and characterization of emerging and re-emerging virus pathogens. He is involved in developing diagnostic tools, identifying and expressing key immunogens, epitope mapping, vaccine development, and antibody production. He has developed diagnostic tools, identified Dipeptidyl peptidase 4 (DPP4) as the entry receptor, and identified the dromedary camel as the reservoir host for MERS-CoV. Currently, his team is trying to understand the entry mechanism of coronaviruses.