Amid Social Media Censorship, Why Are Some People Still Hesitant About Vaccines?

A Chinese nurse prepares a dose of vaccination against measles in Anhui province in September 2010. Chinese vaccines have been criticized for their inferior quality, and damage to the children they are given to. STR/AFP/Getty Images

Earlier this year, the World Health Organization (WHO) released its “Ten threats to global health in 2019” list, and it included vaccine hesitancy among the list of environmental threats and diseases.

Vaccine hesitancy is defined as reluctance or refusal to use vaccines. The reasons for vaccine hesitancy are complex and numerous.