Pre-pregnancy pertussis vaccination most effective: study

The NSW study compared 217 cases of pertussis infection in infants four months and under with 585 matched controls. It found vaccinating mothers before delivery reduced the risk of pertussis infection in their babies by almost 50%, Dr Helen Quinn told the Australian Society for Infectious Diseases in Canberra today.

Dr Quinn and colleagues at the National Centre for Immunisation Research and Surveillance showed 26% of 585 matched control mothers were vaccinated before delivery, but only 14% of case mothers.

Dr Quinn said a much larger group of women than expected had been vaccinated before the birth, with the

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