coronavirus pandemic, the Centre has said that the virus may emerge again and so preparations have to be made at the national level in collaboration with states.Infrastructure in the country needs to be ramped up while Covid-19 restrictions and appropriate behaviour must be strictly followed.Dismissing allegations that the government was unaware of the intensity of the second wave, NITI Aayog member (health) Dr V K Paul said, "We kept warning again and again from this platform that the second wave of COVID-19 will come."It was said that the sero-positivity is 20%, 80% of the population is still vulnerable and that virus has not gone anywhere and other countries were also witnessing a resurge."Addressing a press conference today, Paul said,.