According to a survey by the Institute of Epidemiology, Disease Control and Research (IEDCR), around 45 percent of people surveyed in Dhaka were found to be carrying Covid-19 antibody. And the presence of such antibody among slum-dwellers was about 74 percent. At a time when many countries have been hit by the second wave (we have been cautioned too), such news gives us hope. It means we might be on the way to develop herd immunity. However, 82 percent of the Covid-19 cases surveyed were asymptomatic. That means we must still remain extremely careful and not take the virus lightly, as seems to be case with many on the streets.