For more than a year, the coronavirus, which has become the enemy of entire humanity, is constantly mutating, that is, by changing itself, it is not only becoming stronger but also becoming more infectious than before. India is in the middle of COVID second wave, reporting record cases overtaking Brazil and America. But COVID-19 new strain has been identified, which raises concern. B.1.617 is the third mutation of SARS-CoV-2. Watch the video to know more.