Total 20 cases of a mutant strain of Covid-19 that first surfaced in the United Kingdom have been detected in India. The new variant is believed to be 70% more infectious, but doctors have said there is no reason yet to believe that it is more lethal or will not be controlled by a coronavirus vaccine. Here are some of the states/Union territories (UT), returnees to where have been found positive for the new Covid-19 strain: