My little boy is 18 months and IS completely upto date with all his immunisations. However he has managed to catch whooping cough and has been very poorly but after 2 different anti biotics and over 2 weeks of coughing and vomiting he's a little better. People have heard the cough and looked very shocked and said OMG was he not imunised !!!! When I say he is they find it heard to believe he was whooping cough since he was imunised against it!!! Has anyone else's child caught something after having all of their injections?