In a new Quanta Magazine article, “Vaccines are Pushing Pathogens to Evolve”, Dr. Bill Hanage reflects on his days as a young scientist with the introduction of the Prevenar 7 vaccine in the early 2000s. “It struck me, with my almost complete lack of formal training in evolutionary biology, that this was an extraordinary evolutionary experiment,” he said. This now forms the basis for much of his work on how pneumococcus adapts to selection pressure.