
Currently, there is no evidence that people who have recovered from COVID-19 and have antibodies are protected from a second infection, the World Health Organisation (WHO) said in a statement. The international health watchdog also warned against the use of so-called “immunity passports” or “risk-free certificates” after COVID-19 as they ...

The global coronavirus death toll approached 200,000 on Saturday as the United Nations launched an international push for a vaccine to defeat the pandemic. Governments around the world are struggling to limit the economic devastation unleashed by the virus, which has infected nearly 2.8 million people and left half of ...