Since then little has changed. Writing in the Telegraph on Monday Dr Tedros, alongside the heads of three other UN bodies, said a “two-track pandemic” was developing “with richer countries having access and poorer ones being left behind.” “Inequitable vaccine distribution is not only leaving untold millions of people vulnerable to the virus, it is also allowing deadly variants to emerge and ricochet back across the world,” they wrote. But are things as bad as they seem? And what can be done to vaccinate the world? The hurdles – and the solutions – can be split into three broad categories: making, buying and distributing the shots. Here, we take a look at each.