A new type of ‘vaccine scepticism’ has been uncovered by researchers at Lancaster University, who examined a nine-million-word corpus of tweets looking at vaccine comparisons and evaluations.

Malcolm Gladwell investigates the origins of what the U.S. Secretary of Health and Human Services believes (and doesn’t believe) about viruses.

Health Secretary Robert F. Kennedy Jr. has removed every member of a scientific committee that advises the Centers for Disease Control and Prevention on how to use vaccines.