A medical doctor cum biomedical scientist. Worked at the country's top medical institution AIIMS Delhi for 30 years in various faculty positions. Research and teaching experience of 40 years in infectious diseases and their investigations. Has more than 375 publications in various national and international journals/proceedings, 6 books/ manuals and 7 patents, with cumulative Citation index of 15100, h-index of 64 and i10 index of 234. Major research areas include tuberculosis, kala-azar, toxoplasmosis and hepatitis viruses. Has guided or co-guided more than 32 PhD/DM students and another 40 MD/MS students. Has successfully completed 23 national and international research projects. Has organized 4 International and 2 national conferences. Currently directing 2 internationally and 6 nationally-funded research projects. Advising the Government of India and other academic bodies on various national issues and educational and research programs. Received several national and international awards. Listed in the top 2% scientists of the world consecutively for 5th year by Stanford University/ Elsevier. Specialties : Clinical Microbiology and Infectious Diseases