Amid measles outbreaks and the World Health Organization announcing anti-vaxxers pose a global health threat, Facebook is drawing criticism for the proliferation of anti-immunization groups on the social media platform.
The Guardian reports that the groups promote alternatives to vaccines, like high doses of vitamin C to fight communicable diseases, or vitamin A to ward off measles. Some groups have tens of thousands of members and are closed, which means new members must be approved before joining.…