“Introduction: The World Health Organization (WHO) issues regularly updated position papers on vaccines against diseases that have an international public health impact. This paper, which presents WHO’s position on the advisability of requirements for COVID-19 vaccination or proof of vaccination for international travellers, is designed for use mainly by national public health officials and managers of immunization programmes…
WHO position: At the present time, it is WHO’s position that national authorities and conveyance operators should not introduce requirements of proof of COVID-19 vaccination for international travel as a condition for departure or entry, given that there are still critical unknowns regarding the efficacy of vaccination in reducing transmission…
Scientific considerations: A number of scientific unknowns remain concerning the effectiveness of COVID-19 vaccines: efficacy in preventing disease and limiting transmission, including for variants of SARS-CoV-2; duration of protection offered by vaccination; timing of booster doses; whether vaccination offers protection against asymptomatic infection; age and population groups that should be prioritized for vaccination, specific contraindications, how long before travel vaccines should be offered; and possible exemption of people who have antibodies against SARS-CoV-2.”
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