Emphasizing the importance of natural immunity, a Swedish study published on Mar. 31, 2022, in The Lancet concludes that if vaccine passports are used for societal restrictions related to COVID-19, they should also recognize a previous infection as proof of immunity instead of focusing only on a person’ vaccination status.

As the World Health Organization (WHO) continues to push for an international vaccine “passport,” the study, which included over 8.5 million subjects across Sweden, revealed that the risk of SARS-CoV-2 reinfection and COVID-19 hospitalizations for those already infected and recovered remains extremely low for at least up to 20 months ( and counting)

https://uncoverdc.com/2022/04/01/swedish-study-any-vaccine-passport-should-recognize-natural-immunity/