It is not the strongest of the species that survives, nor the most intelligent that survive. It is the one that is most adaptable to change –Charles Darwin

Without planes, trains and automobiles the virus would never have got this far, this fast in the world. Scientists are working around the clock to understand the biology of the covid-19 virus and how it infects human cells, which will help us design treatments to stop it.

The Covid-19 have a simple structure with several features. Figure 1 shows the component of   Covid-19. The virus that causes COVID-19 is transmitted through tiny, invisible droplets sent into the air when someone already infected coughs or sneezes.  Once we inhaled the COVID-19, Spike (S) glycoprotein of virus binds to the cell membrane protein angiotensin-converting enzyme 2 to enter human cells.