title: The authors reply.
authors.affiliation: Department of Medicine, University of Washington, Seattle, WA, Department of Global Health, University of Washington, Seattle, WA, and Vaccine Access and Delivery Global Program, PATH, Seattle, WA Department of Medicine, University of Michigan, Ann Arbor, MI.
authors.forename: Justin R
authors.initials: JR
authors.lastname: Ortiz
authors.forename: Kathleen M
authors.initials: KM
authors.lastname: Neuzil
authors.forename: Colin R
authors.initials: CR
authors.lastname: Cooke
mesh_terms: D016638:Critical Illness / Q000628:therapy*; D005260:Female; D017052:Hospital Mortality; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000628:therapy*; D008297:Male