When Claire Crisp agreed to have her three-year-old daughter Mathilda vaccinated against swine flu, she believed she was doing the best to protect her from a life-threatening pandemic.
In 2009, all children under five were invited to be vaccinated in a nationwide scheme.
Fortunately, the much-feared 2009-2010 outbreak never reached the pandemic scale expected. But Claire is convinced that the vaccine against it has left Mathilda with severe narcolepsy.
Mathilda is the youngest known person in the world to be diagnosed with the neurological condition, which causes sufferers to suddenly fall asleep during the day. Mathilda also had terrifying nocturnal hallucinations and excruciating pain.Now she is part of a protracted legal battle against the Government for compensation for vaccine-related narcolepsy. Last week, their case went to court on appeal.