@CNN: Russian trolls and Twitter bots amplified online debates about vaccines between 2014 and 2017, a new study suggests https://t.co/niloe0YI44 https://t.co/Kox8VHNq6V

@CNN: Russian trolls and Twitter bots amplified online debates about vaccines between 2014 and 2017, a new study suggests https://t.co/niloe0YI44 https://t.co/Kox8VHNq6V