evidence: Tedros Adhanom Ghebreyesus said it was not fair for younger, healthy people in richer nations to get injections before vulnerable people in poorer states. [...] "My challenge to all member states is to ensure that by the time World Health Day arrives on 7 April, Covid-19 vaccines are being administered in every country, as a symbol of hope for overcoming both the pandemic and the inequalities that lie at the root of so many global health challenges," Dr Tedros said. [...] Reacting to Dr Tedros' warning, UK Health Secretary Matt Hancock said: "The UK is the world's biggest supporter, financial supporter, of the global programme to ensure access to vaccines in all countries in the world."