Kahlee Boyle

1 Introduction Influenza and pertussis are two of the most frequently reported vaccine preventable diseases in Australia [1]. Pregnant women are at a higher risk of severe illness and even death from respiratory viruses, including influenza [2, 3], and infants aged < 6 months that are too young to receive direct immunisation are also highly vulnerable. Infants are disproportionately susceptible to severe influenza and pertussis infections due to their immature immune systems [4, 5].