It is easy to become so used to scientific and social advances that we take them for granted. But sometimes we should pause to celebrate – to feel genuine awe – at the wonders that we have seen. Amid all the wars, the disasters and the crimes of the last half century, we have witnessed nothing short of a miracle.
Vaccination, in addition to clean water, sanitation and improved nutrition, has been one of the greatest contributors to global health. It is responsible for much of the astounding fall in child mortality, which plummeted by 59% between 1990 and 2022. It has saved more than 150 million lives, mostly of infants, since the Expanded Programme on Immunisation was launched by the World Health Organization in 1974. Initially designed to protect children against diseases including smallpox, tuberculosis, polio and measles, the scheme has since been extended to cover more pathogens. Then, in 2000, came the Global Alliance for Vaccines and Immunisation (Gavi), a public-private organisation that provides financial and technical support for vaccination in poorer countries and negotiates with manufacturers to lower costs.
