In-Hospital Complications of Influenza A and B Among Hospitalized Australian Children in the Post-COVID Era.

Cohort studyThe clinical respiratory journal· Jul 2026

In-Hospital Complications of Influenza A and B Among Hospitalized Australian Children in the Post-COVID Era.

Angelica Wei Wen Hii, Jahidur Rahman Khan, Kishor Kumar Paul … Nusrat Homaira

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Pulmonology & Critical CareCohort studyPrognosisQ2IF 2.1

Influenza B linked to higher risk of intensive care admission in hospitalized children

In-Hospital Complications of Influenza A and B Among Hospitalized Australian Children in the Post-COVID Era.

Angelica Wei Wen Hii … Nusrat Homaira

The clinical respiratory journal · Jul 2026

Background

Influenza is a leading cause of pediatric hospitalizations, with clinical presentations and outcomes varying between types A and B.

Purpose

This study compared the clinical characteristics and complications of children hospitalized with influenza A and B at the Sydney Children's Hospitals Network (SCHN) in the post-COVID era.

Methods

We conducted a retrospective cohort study of children < 18 years admitted to SCHN with influenza during 2022-2023.

Results

influenza B children much more likely to need intensive care or breathing-machine support

RR by subgroup · 95% CI

More results

Among 704 influenza hospitalizations, 480 (68.2%) were due to influenza A and 224 (31.8%) to influenza B.

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Conclusion · 1 of 2

Influenza B, though less prevalent, was associated with greater severity, particularly in older children.

Conclusion · 2 of 2

These findings underscore the importance of continued protection against both influenza types and support consideration of expanding vaccine access to children aged 5 years and older.

In-Hospital Complications of Influenza A and B Among Hospitalized Australian Children in the Post-COVID Era.

In-Hospital Complications of Influenza A and B Among Hospitalized Australian Children in the Post-COVID Era.

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