title: Reply to Levi et al.
authors.affiliation: School of Public Health, Curtin University, Bentley, Australia.|Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Subiaco, Western Australia, Australia.
authors.forename: Annette K
authors.initials: AK
authors.lastname: Regan
authors.affiliation: Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Subiaco, Western Australia, Australia.
authors.forename: Hannah C
authors.initials: HC
authors.lastname: Moore
authors.affiliation: Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Subiaco, Western Australia, Australia.
authors.forename: Nick
authors.initials: N
authors.lastname: de Klerk
authors.affiliation: Rollins School of Public Health, Emory University, Atlanta Georgia, USA.
authors.forename: Saad B
authors.initials: SB
authors.lastname: Omer
authors.affiliation: Communicable Disease Control Directorate, Department of Health Western Australia, Shenton Park, Australia.|School of Medicine, Notre Dame University, Fremantle, Western Australia.
authors.forename: Donna B
authors.initials: DB
authors.lastname: Mak
authors.affiliation: School of Medicine, Notre Dame University, Fremantle, Western Australia.|School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, Australia.
authors.forename: Paul V
authors.initials: PV
authors.lastname: Effler
mesh_terms: D005260:Female; D006801:Humans; D015994:Incidence; D007251:Influenza, Human; D011247:Pregnancy; D012189:Retrospective Studies; D012621:Seasons; D050497:Stillbirth; D014611:Vaccination