We have entered the fourth year of the pandemic. Billions have likely been infected and the official death toll exceeds six million. More than two-thirds of the world’s population have received at least one dose of Covid-19 vaccine, with 92 per cent of people in Singapore having completed their primary vaccination series. 

The Covid-19 virus has gone through a number of iterations, but there are no signs that it will go away. Notwithstanding, borders and communities have reopened, with anticipation of life returning to normality. The question on everyone’s mind is whether we have truly defeated Covid-19. Is the worst over? Or will the virus make a comeback that will give us little choice but to retreat to the measures of recent years?