evidence

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According to the WHO, there is not enough evidence about the effectiveness of antibody-mediated immunity to guarantee the accuracy of an "immunity passport" or "risk-free certificate." Denis Balibouse, Reuters/file The World Health Organization (WHO) warned on Saturday that there is no evidence that people who test positive for the new coronavirus are immunized and protected…

The World Health Organization (WHO) said on Saturday that there was currently “no evidence” that people who have recovered from COVID-19 and have antibodies are protected from a second coronavirus infection. 2:34 Coronavirus outbreak: Trudeau says no plans to reopen ‘hinge’ on people being immune to COVID-19 Coronavirus outbreak: Trudeau says no plans to reopen…

The World Health Organization warned on Saturday that recovering from coronavirus may not protect people from reinfection as the death toll from the pandemic approached 200,000 around the globe. Governments across 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…

Coronavirus antibody test kits are key to plans for proposed "immunity passports," but the World Health Organization is warning that such cards may simply encourage further transmission. Greg Baker/AFP via Getty Images hide caption toggle caption Greg Baker/AFP via Getty Images Coronavirus antibody test kits are key to plans for proposed "immunity passports," but the…