electron microscope view of SARS COV-2attacking lung cells Introduction: The SARS coronavirus 2 comes from the subfamily Orthocoronaviri nae , in the family Coronaviridae. These viruses occur in many organisms including humans and have been associated with zoonotic diseases for a long time. These positive-sense RNA viruses are commonly known to cause common cold in humans and rarely diarrheal symptoms in children. The cases that these viruses have started to affect humans are recent. Being completely new viruses for causing human diseases they have been a pretty nuisance in the past few decades. The 2003 SARS outbreak, 2013 MERS outbreak, and recent 2019 SARS COVID-19 outbreak are the periods when these viruses appeared so aggressively to cause Pandemic. The occurrence of SARS and MERS was not that widespread and was contained within those fixed geographical locations but the case is not the same in SARS-COVID-2 where the whole world is suffering from a hu