Everydayscience

         The most contagious variant of covid is the Delta and also termed 1617.2 which was discovered in December 2020 in India. Now, this variant is responsible for most of the covid cases in the U.K and it is speculated that it will also dominate the United States.      The new delta variant had reached almost 80 countries and caused travel restrictions in many of these countries. The contagious nature of this variant of covid has raised concerns about the efficacy of existing vaccines and the importance of analysis of delta variant is increased.   Delta strain of covid spread more rapidly.      As mentioned above Delta variant had reached 80 countries and in the U.K cases of Delta variant surpassing the Alpha variant. However Alpha variant is also contagious but stats indicate that the Delta variant is 43-90 percent more contagious than Alpha. According to researchers Delta variant could spread 30 or 100 times faster as compared to Alpha. Scientists are unable to unveil such conta