The health secretary has warned that "fake news" circulating online about vaccinations is leading to increasing numbers of people turning them down.
New figures show that more than half a million children in the UK were not vaccinated against measles over an eight-year period, which the head of the NHS has branded a "growing public health timebomb".
Appearing on the breakfast show, Matt Hancock said he was planning to meet with social media companies to tackle vaccine misinformation.
"I have called in the social media companies. I'll be seeing them on Monday to talk about what they can do to take down that sort of fake news and instead promote the scientific facts," he told talkRADIO's Julia Hartley-Brewer.
He added that it was the responsibility of parents to "do the right thing" and get their children vaccinated.
"Some people can't be vaccinated, and it's a responsibility on everyone to get vaccinated. It's good for you and your family, but it's also good for your neighbour.
"Diseases like measles are horrible and they are more or less stamped out in the UK and we need to keep it that way."