India, April 1 -- Coronavirus is the most formidable enemy that mankind has encountered in living memory. COVID-19 has ravaged the world as no calamity or war did in history. The World Health Organisation (WHO) officials have said that the ongoing pandemic has caused more "mass trauma" than World War II, besides warning of its lasting consequences. What makes it supersede all human efforts to contain it is not only its ability to spread fast but also to mutate - generating new lethal strains against which the current vaccines are rendered ineffective. These new strains are no less than the "weapons of mass destruction" and have left scientists confused. Moreover, the virus has proved that institutions like the WHO and governments across t...