Experts from the Food and Drug Administration (FDA) in the US are warning that the country is close to a vaccination tipping point: a point where there aren't enough vaccinated people to protect the unvaccinated, leading to deaths that would otherwise have been prevented. A new commentary, written by FDA Commissioner Robert Califf and FDA vaccine regulator Peter Marks, highlights COVID-19, influenza, and respiratory syncytial virus as three diseases where vaccinations are crucial in protecting communities. Measles also gets a mention, with a record number of people no longer getting vaccinated against it. That has meant a number of recent...