Covid-19 is a coronavirus disease set off from China in 2019 and it has spread as a pandemic throughout the world, causing more than a million deaths and leaving several millions of people to struggle with acute respiratory and throat infections. It has wide-ranging effects on human health and functioning of vital parts in the body. In acute cases it affects the normal functions of the kidneys, lungs, heart, eyes and brain. This paper discusses the causes, spread and symptoms of Covid-19, and critically analyses its status in India and world-wide, and suggests preventive measures, the ways and means to fight coronavirus and eventually learn to live with this contagious virus in the event of not discovering the right vaccine. The paper also throws light on the challenges in the post-Covid era, such as human life, livelihood, health, education, economy, etc.