Pertussis is a highly contagious infection of the respiratory tract caused by the bacterium Bordetella pertussis. A booster dose of pertussis provided as a combination diphtheria, tetanus and acellular pertussis (DTPa) vaccine has been added to the National Immunisation Program (NIP) Schedule for all children aged 18 months of age.
This fact sheet provides information about the pertussis booster for children aged 18 months for vaccination providers.
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