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Available for over a year
Some governments are considering allowing people who have recovered from Covid-19 to return to work using immunity passports. The ÃÛÑ¿´«Ã½'s health correspondent James Gallagher takes a look at how effective this strategy would be given the lack of evidence that people who have developed antibodies are protected against reinfection. (Image: Coronavirus immunity passport Credit: Getty Images)
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