Published on in Vol 8 , No 1 (2019) :January

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/11333, first published .
Estimating Vaccine Effectiveness Against Hospitalized Influenza During Pregnancy: Multicountry Protocol for a Retrospective Cohort Study

Estimating Vaccine Effectiveness Against Hospitalized Influenza During Pregnancy: Multicountry Protocol for a Retrospective Cohort Study

Estimating Vaccine Effectiveness Against Hospitalized Influenza During Pregnancy: Multicountry Protocol for a Retrospective Cohort Study

Allison L Naleway 1 * , PhD ;   Sarah Ball 2 * , ScD ;   Jeffrey C Kwong 3 , MD ;   Brandy E Wyant 2 , MPH ;   Mark A Katz 4 , MD ;   Annette K Regan 5 , PhD ;   Margaret L Russell 6 , MD, PhD ;   Nicola P Klein 7 , MD, PhD ;   Hannah Chung 3 , MPH ;   Kimberley A Simmonds 8 , PhD ;   Eduardo Azziz-Baumgartner 9 , MD ;   Becca S Feldman 4 , ScD ;   Avram Levy 10 , PhD ;   Deshayne B Fell 11 , PhD ;   Steven J Drews 12 , PhD ;   Shikha Garg 9 , MD ;   Paul Effler 13 , MD ;   Noam Barda 4 , MD ;   Stephanie A Irving 1 , MHS ;   Patricia Shifflett 2 , MS, RN ;   Michael L Jackson 14 , PhD ;   Mark G Thompson 9 * , PhD

1 Kaiser Permanente Northwest , Center for Health Research , Portland , OR , US

2 Abt Associates, Inc , Cambridge , MA , US

3 ICES , Toronto , ON , CA

4 Chief Physician's Office , Clalit Health Services , Clalit Research Institute , Tel Aviv , IL

5 School of Public Health , Curtin University , Perth, Western Australia , AU

6 Cumming School of Medicine , University of Calgary , Calgary , AB , CA

7 Kaiser Permanente Vaccine Study Center , Oakland , CA , US

8 Alberta Health , Edmonton , AB , CA

9 Influenza Division , Centers for Disease Control and Prevention , Atlanta , GA , US

10 PathWest Laboratory Medicine Western Australia , Perth , AU

11 School of Epidemiology and Public Health , University of Ottawa , Ottawa , ON , CA

12 Department of Laboratory Medicine and Pathology , University of Alberta , Edmonton , AB , CA

13 Western Australia Department of Health , Perth , AU

14 Kaiser Permanente Washington Health Research Institute , Seattle , WA , US

*these authors contributed equally

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