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The World Health Organization is not currently keen on vaccine passports. In a statement published on Jan. 28, WHO officials said governments should "not introduce requirements of proof of vaccination or immunity for international travel as a condition of entry" at present.
The United Nations health agency added: "There are still critical unknowns regarding the efficacy of vaccination in reducing transmission and limited availability of vaccines."
https://www.cnbc.com/2021/02/25/covid-vaccine...erned.html