The social media site will take several different approaches to limit information presented by anti-vax groups.
RELATED: After defying anti-vaccine mom, teen explains why he got vaccinated
Ohio teen defies anti-vaccine mom, gets his shots
They say they are focusing on posts that provide misinformation.
Those posts won't be taken down but they won't show up as recommendations from Facebook.
RELATED: Texas among states with highest rates of children who aren't vaccinated
Vaccination rates drop as measles outbreak grows
Public health officials say social media is a big factor in spreading false information.