In 2013, Facebook was collaborating with researchers on a major campaign to encourage its users to get flu shots, but scrapped the plan for unknown reasons in 2014 after months of work had been done, according to a person with direct knowledge.

 

The idea was to pick a public health issue to determine whether targeting users on a social messaging on a site like Facebook could change behavior. It would've been a big first step for the social networking giant into the $3 trillion health sector.

 

Among the ideas floated were a Facebook page to provide information about flu vaccines, a badge for users to share that they'd been vaccinated and new forums for people to share testimonials, according to project proposals viewed by CNBC.

 

more at cnbc: http://www.cnbc.com/2017/06/27/facebook-scrapped-flu-shot-promotion.html