Adult household contacts and carers of infants aged <6 months are recommended to receive pertussis-containing vaccine at least 2 weeks before they have close contact with the infant

Adult household contacts and carers of infants <6 months of age are recommended to receive dTpa vaccine at least 2 weeks before they have close contact with the infant if their last dose was more than 10 years ago.^27,28 Pertussis infection in infants <6 months of age is associated with significant morbidity. The infection source in infants is often a household contact.²⁹ See Epidemiology.