Q: My child has just been diagnosed with whooping cough. How is that possible since he’s had the whooping cough vaccine?
Vaccination is generally quite effective in inducing host immunity to the disease being vaccinated against, however it is not 100 per cent effective. That is to say, some people don’t “seroconvert” (become immune) to the disease after vaccination. Immunity to the disease can also wear off in under 10 years, so this may unfortunately be another reason your child became susceptible to whooping cough.
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Any advice given is general in nature and is not intended as a substitute for medical advice and must not be relied upon as such. For any healthcare advice, always consult a healthcare practitioner.