Principal Scientific Advisor to Centre K Vijay Raghavan on Wednesday said that the "third phase" of Covid-19 is inevitable.

Raghavan, while briefing the media personnel over the Covid-19 situation in the country said, "Variants are transmitted same as original strain. It does not have the properties of new kinds of transmission. It infects humans in a manner that makes it more transmissible as it gains entry, makes more copies and goes on, same as the original."