https://techcrunch.com/2019/03/07/facebook-anti-vax-vaccine-instagram/

After indicating that it was exploring its options for fighting the potentially deadly rise of anti-vaccination content on its platform last month, Facebook is making a plan of attack.

Facebook’s strategy in the effort is to both minimize the spread of vaccination misinformation and to point users away from inaccurate anti-vaccination propaganda and toward “authoritative information” i.e. info corroborated by the health and scientific establishment.