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Vertical Vaccination Against Infant Influenza Hospitalization in a Tropical Setting

JAMA Network Open 10.1001/jamanetworkopen.2026.28389

August 11, 2026 at 11:00 AM EDT

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In this retrospective cohort study in a tropical region with year-round influenza transmission, a strategy of immunizing mothers at any point during their pregnancy was associated with reduced risk of infant influenza hospitalization.

Corresponding Author: Liang En Wee, MBBS, MPH, Singapore General Hospital, Outram Road, Singapore 169608 (ian.wee.l.e@singhealth.com.sg).

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