https://phys.org/news/2019-03-facebook-vaccine-misinformation.html

US lawmakers have decried the higher incidences of preventable diseases in the wake of a movement against child vaccination, in large part due to rumors they can cause health or developmental issues.

Monika Bickert, Facebook's vice president for global policy management, said the social media network would reduce the distribution of false data and provide users with authoritative information about vaccinations.