In this Wednesday, July 28, 2021 file photo, a health worker administers a dose of Janssen COVID-19 vaccine by Johnson & Johnson in the Medina neighborhood in Dakar, Senegal.

Video. WHO chief will 'continue to call for vaccine equity until we get it'

Dr Tedros Adhanom Ghebreyesus appealed again for drug companies to prioritise the UN-backed COVAX initiative designed to share vaccines globally.