Immunity? The World Health Organization warns there is no evidence currently that people who have had the coronavirus are immunised and protected against reinfection, raising doubts over the use of "immune passports" to allow some people at least to return to normal life. Global vaccine effort The United Nations launches an international push for a vaccine, with the UN chief saying the effort will require cooperation on a global scale and calling on international organisations, world leaders and the private sector to join the effort. More than 197,000 dead More than 197,000 people have died worldwide since the epidemic surfaced in China in December, according to an AFP tally at around midday today, based on official sources.