As the dawn of 2020 arrived, a new threat to Mankind was revealed in the form of- novel Corona Virus, claiming lives incessantly all over the world. Starting in the end of 2019, December, this strain of Corona virus was first isolated from Wuhan, China. The never before identified strain of Corona virus in man, was named as novel Corona virus (2019-nCoV). The infection caused has now been named as Coronavirus Disease 2019 (COVID19). With the physicians still to learn about its behaviour and with no cure at hand, the disease turned into pandemic very soon. World Health Organization instructed all information regarding COVID-19 accessible, so as to doctors and health workers all over the world can use it for better management of the patients globally. Association of Physicians of India has also followed the foot-steps of WHO and has committed itself for the integration of knowledge among the nation and its members regarding COVID-19 through this book Clinical Updates on COVID- 19. As severe forms of the infection have been encountered by the individuals suffering from co-morbidities, this book has addressed Covid 19 infection in such patients with great details. Hope this book will be helpful for all the practicing physicians and resident doctors in combating this Pandemic all over the world.