Digital Covid-19 certificates aimed at facilitating free movement in the European Union came into force across the bloc on Thursday, a long-awaited milestone for countries hoping to boost their ailing tourism industries — but also a point of friction over the number of vaccines that do not qualify.
Free movement is a key pillar of European integration, and E.U. officials said last month that the certificates would “again enable citizens to enjoy this most tangible and cherished of E.U. rights.”
So far, the European Union lists four vaccines as qualifying for the certificate, all of which have been authorized for use across the bloc. They are the vaccines made by Pfizer-BioNTech, Moderna, Johnson & Johnson and AstraZeneca.
That leaves out a vaccine that the international Covax mechanism has distributed across Africa: Covishield, a version of the AstraZeneca vaccine that is manufactured in India. It is, however, accepted in a…