Whooping cough: 'It was quite frightening'
6 July 2012 Last updated at 17:29 BST
Child health experts say a booster dose of whooping cough vaccine may be needed to deal with the biggest outbreak in 20 years in the UK which has led to the deaths of five babies.
So far this year across the UK there've been almost 2,398 cases of whooping cough, compared with 272 in the same period last year.
Katie Lodge from Weston-super-Mare got infected at nine weeks, just before she was taken for her first vaccination, and ended up in hospital needing oxygen and could have died.
Her parents Claire and Jon Lodge want to raise awareness of the condition, the symptoms, and the importance of immunisation.