IT'S been two years since the new coronavirus, SARS-CoV-2, and its disease, COVID-19 were declared a global public health emergency. During this period, there have been over 433 million confirmed cases of COVID-19, including over 6 million deaths, reported to the World Health Organization. The pandemic changed life across the globe, through lockdowns, sickness and lives lost. It also sparked life-saving research and analysis. The Conversation Africa brings you some of the highlights of its coverage of variants, vaccines, lockdowns and their effects over the period – and what what’s been learned about health systems, policy making and humanity. Authors…