One of the major reasons for the second wave of the corona is the double mutant of the Covid-19 virus. Even now the scientists have identified the triple mutant of the coronavirus which is very dangerous. This triple mutant is being called the Bengal variant of the virus and this variant spreads very quickly and makes the infected patient immediately sick. What is Corona's Bengal connection in the second wave? Why is the infection spreading so fast? Why are there such deadly symptoms? The more a virus spreads, the more it mutates. Covid-19 virus has been mutated millions of times, although 4 new types of Covid variants have been found so far.