Nagalingeswaran Kumarasamy Nagalingeswaran Kumarasamy, MD is Chief and Director, Infectious Diseases Medical Centre, Voluntary Health Services Hospital, Chennai, Southern India. The clinic he directs provides medical care for more than 25,000 persons living with HIV, Viral Hepatitis, Tuberculosis and infectious diseases. He is the Director of Chennai Antiviral Research and Treatment (CART) Clinical Research Site. It conducts clinical research and trials in therapeutics and prevention in HIV and other Infectious Diseases. He is a clinical investigator for on-going clinical research projects with the University of California (San Diego); Brown University (Providence); Harvard University, Boston, USA; University of Washington, Seattle ; University of Colorado,Denver; University of New South Wales/Kirby Institute, Sydney, Australia; NIH ,ICMR and WHO. A clinician with more than 25 years of research experience, Dr. Kumarasamy has published more than 475 manuscripts in peer-reviewed journals. Several landmark antiretroviral clinical trials he conducted have informed treatment guidelines and influenced antiretroviral scale-up programs in low- and middle-income countries. He is an expert panel member for the World Health Organization’s Committee on antiretroviral treatment guidelines and a clinical advisor for the Clinton Health Access Initiative. He has a particular interest in the long-term impact of antiretroviral therapy in resource-limited settings and the impact of climate change on Emerging Infectious Diseases.