COVID 19 pandemic has shaken the roots of World in all aspects. Infections, Deaths, inability to create facilities, stress upon front-line workers, restrictions and unusual adaptation in life-style, lockdowns and economic down-turn, loss of job and income, unemployment, limited establishments, insecurity and so on.. Luckily, now vaccines are rolling all over the world. Since the viral strain is continuously mutating and increasing its virulency, I need to know what impact does the vaccine administration will have upon the virus. Will it become more virulent or benign in the coming days?