Various Variants of COVID-19: An Overview

Considering the situation in last decade. Viruses constantly change through mutation and new variants of a virus are expected to occur. This variant's emerge and disappears. Other times, new variants persist. This becomes more diverse day by day. It?s like a tree growing and branching out; each branch on the tree is different. Likewise each and every strain is different than others. There is a rapid spreading of strains of COVID-19.Viruses mutates all the time and they changes in different forms and this makes disease more infectious and harmful. Due to this strain many drugs and vaccines are unable to act against COVID-19. They are only relieving the symptoms but not produce the good therapeutic effect. This new strain made the COVID treatment difficult. Many Scientists trying to develop hundred percent effective treatments of COVID-19 but this strain makes it hard. This review concentrates on the various variants of the COVID -19. This review contains information about the various strains of COVID19.We need to trace it, trap it and find much more meaning out of it.