Cieran, a twin, was just seven when he was infected. In this video by the Oxford Vaccine Group, his family tell of their relief that their son survived and describe the long-term problems that Cieran will live with.
The video above was produced before meningitis B vaccine was recommended in the UK in 2014. In the piece below, experts and parents in the UK discuss vaccination against the disease.
Video courtesy of the Oxford Vaccine Group