COVID-19, the disease caused by SARS-CoV-2, is dangerous and highly contagious disease. Global public health emergency has been declared by the World Health Organisation. This outbreak has caused significant threats to health and economy internationally. Currently, research on SARS-CoV-2 has been going on for vaccine. This virus first originated in China and had a rapid spread to other countries. Severe Acute Respiratory Syndrome (SARS), which has caused pandemic in 2002 has resemblance to nCoV-2019, and we will discuss about that in this paper. WHO has taken many measures to control the propagation of the virus, as a part of it, WHO-established Health Emergency of International Concern (PHEIC), with objectives for public health and impact on global health and economy.