Currently working in the area of HIV / AIDS and providing technical support to National AIDS Control Organization, MoHFW, Government of India. As a focal person, providing technical support to HIV Sentinel Surveillance to five northern states (UP, Bihar, Jharkhand, Uttarakhand, Delhi) of India. Also involved in a research on human influenza disease burden in India, and vaccine effectiveness trial studies in collaboration with Center for Disease Control, Atlanta, and University of Alabama, USA.