Vaccines have helped mankind to tackle the dire threat of infectious disease for more than a hundred years. They have become key tools of public health and scientists are charged with developing them as quickly as possible to combat the emergence of new diseases such as Zika, SARS, Ebola and Coronavirus. But why are growing numbers of parents all over the world now questioning the wisdom of having their children vaccinated? Why have public-sector vaccine producers been sold off? And can we trust...
