While there has been much interest and investment in developing Covid-19 vaccines and medicines, there has been far less attention to how we will manage and allocate the global supply of treatments and vaccines if, and when, we have them. If scientists succeed, will politics hinder equitable access to a Covid-19 vaccine? Melisa Idris and Sharaad Kuttan speak to Leena Menghaney, South-Asia Head, Medecins Sans Frontieres' Access Campaign.