On 6 August 2021, the World Health Organisation (WHO) published its technical specifications and implementation guidance for “Digital Documentation of COVID-19 Certificates: Vaccination Status” (DDCC:VS) following months of consultations. As governments around the world are deploying their own Covid-19 certificates, guidance from the global health agency was expected to set a global approach, and one that prioritises public health. As such, we would expect the WHO to identify what these…