The World Health Organization (WHO) said on Saturday that there is currently "no evidence" that people who have recovered from COVID-19 and have antibodies are protected from a second coronavirus infection.
In a statement, the United Nations agency warned against issuing "immunity passes" or "risk-free certificates" for infected people. Practice can actually increase the risk of spreading because they may ignore standard recommendations.
Chile said last week that it will begin to distribute "health passes" to people who are believed to have recovered from the disease. After screening to determine if they have developed antibodies that make them immune to the virus, they can be immediately reinstated.
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