India has made advance purchase of the maximum amount of Covid vaccine in the world with 1.6 billion doses, but it would only cover 59 per cent of its population. A study by the Duke University of the US shows a huge gap in the vaccine purchase of rich nations and developing countries. High income countries have purchased as many vaccine doses as possible to increase their chances of covering their whole population multiple times. Middle and lower-middle income countries do not have enough to vaccinate everyone.
