Russia's meddling online went beyond the 2016 US presidential election and into public health, amplifying online debates about vaccines, according to a new study published in the American Journal of Public Health. CNN's Samantha Vinograd reports.
Russia's meddling online went beyond the 2016 US presidential election and into public health, amplifying online debates about vaccines, according to a new study published in the American Journal of Public Health. CNN's Samantha Vinograd reports.