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Coronavirus Disease 2019 (COVID-19) is caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARSCOV-2). It started from Wuhan city of China and now has become a pandemic all over the world, affecting the majority of countries. COVID-19 has caused 71.6 million cases worldwide till now, out of which 46.8 million recovered and 1.6 million died. In Pakistan, it affected 429 thousand population till now, out of which 374 thousand recovered and 8796 precious lives were lost, making fatality rate at 2%. The spectrum of coronavirus disease continues to unfold as time passes. It has created health and economic crisis all over the world. Being a new virus means less information on behavior and a lot to learn for its immunity. It was assumed initially that reinfection was less likely. Once exposed, we will develop antibodies and will be safe. But now we have a case of Covid-19 reinfection, depicting that despite exposure and having IgG Antibody titer, reinfection occurred within 6 months. [ABSTRACT FROM AUTHOR]