Global tally of Covid-19 cases has crossed the 100 million mark, as per the Johns Hopkins University tracker. Death toll due to the virus has now topped 2.1 million, the tracker shows. The United States, which passed 25 million confirmed cases last weekend, remains the country with the largest outbreak. India is second with 10.7 million cases, and Brazil third with 8.9 million cases. The official number of cases registered since the pandemic first broke out in China, in late 2019, represents just a fraction of the real number of infections around the world.