Another variant, B. 1.617, has become the predominant variant in Maharashtra, according to Nature magazine. This variant is sometimes referred to as the “double variant” because it contains two main mutations that were found in the other two highly contagious strains. However, to date, there is no confirmed data indicating that B. 1.617 is more transmissible than other variants, and India is not performing sufficient genome sequencing to determine whether B. 1.617 is driving the current outbreak.