The World Health Organization says vaccine hesitancy is among the top 10 threats to global health. Skeptics around the world have taken to the streets to protest against COVID-19 jabs. But where can we trace the origins of vaccine skepticism?

China’s vaccine rollout has gotten off to a slow start. Now, as Beijing tries to boost vaccination rates across the country, citizens are having doubts about the safety and efficacy of the available inoculations.