An anti-vaxx website has been taken over with real information about vaccinations.
justiceforjabbed.im was set up by a group which holds protests and demonstrations – one high-profile member was jailed for eight months after being convicted of stalking a pregnant doctor.
But the internet site they set up – and publicise on T-shirts – now points out vaccines work and tells people to seek medical advice when deciding if they should have them.
It links to reputable sources of information, and says social media is often misleading.