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Updated: Jun 14, 2026

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Published on: March 2, 2016
H1N1 influenza A presenting as bacterial tracheitis
Brandon S Hopkins1, Kaalan E Johnson, Jeff M Ksiazek
1Department of Otolaryngology-Head and Neck Surgery, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0528, USA. hopkinbn@ucmail.uc.edu
Early H1N1 influenza cases are presenting as bacterial tracheitis (BT), a potentially dangerous combination. Prompt H1N1 testing and antiviral treatment are recommended for hospitalized patients with suspected BT.
Area of Science:
- Infectious Diseases
- Otolaryngology
- Virology
Background:
- Bacterial tracheitis (BT) is a severe airway infection.
- The 2009 H1N1 influenza pandemic presented a novel public health challenge.
Purpose of the Study:
- To report on the unusual presentation of bacterial tracheitis in conjunction with H1N1 influenza.
- To discuss the implications of viral coinfection with H1N1 on BT presentation and management.
Main Methods:
- Case series analysis of six patients with bacterial tracheitis.
- Clinical observation during the early 2009 H1N1 flu season.
Main Results:
- Six cases of bacterial tracheitis were identified with concurrent H1N1 influenza A infection.
- No prior literature documented H1N1-associated bacterial tracheitis.
Conclusions:
- The combination of H1N1 and bacterial tracheitis poses a significant, life-threatening risk.
- Otolaryngologists should consider H1N1 testing and antiviral therapy in suspected BT cases.
Related Concept Videos
Influenza
Atypical Pneumonia
Acute Pharyngitis
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Bacterial Meningitis I: Introduction
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Pneumonia I: Introduction

