Dr David Elliman, from the Royal College of Paediatrics and Child Health, said he was "surprised" outbreaks had not been more common.

BBC: A million children at risk of measles, doctors warn

Dr David Elliman, an immunisation expert at the Royal College of Paediatrics and Child Health in the UK, said the 2015 target was in danger.

BBC: Threat to measles elimination plans

Dr David Elliman, from the Royal College of Paediatrics and Child Health, said the vaccine would prevent a "huge amount of suffering" and save the NHS money.

BBC: Babies to get 'gut bug vaccine'

Dr David Elliman, a consultant in community paediatrics at Great Ormond Street Hospital, told the BBC it was important to investigate "very quickly" to allay people's fears about the safety of the jab.

BBC: Cancer jab alert after girl dies