Related Experiment Video
Updated: May 5, 2026

Using Bioluminescent Imaging to Investigate Synergism Between Streptococcus pneumoniae and Influenza A Virus in Infant Mice
Published on: April 14, 2011
The complex link between influenza and severe sepsis
Diana F Florescu1, Andre C Kalil1
1Infectious Diseases Division; Internal Medicine Department; University of Nebraska Medical Center; Omaha, NE USA.
Abstract:
Severe sepsis is traditionally associated with bacterial diseases. While fungi and parasites can also cause sepsis, they are significantly less common than bacterial causes. However, viruses are becoming a growing cause of severe sepsis worldwide. Among these viruses, influenza is crossing all geographic boundaries and is causing larger epidemics and pandemics. As a consequence, more critically ill patients with severe sepsis caused directly by influenza viruses, or indirectly by influenza-induced secondary bacterial infections are being admitted to hospitals worldwide. This manuscript aims to provide a pathophysiological and clinical update on the link between influenza and severe sepsis.
Insights
Influenza viruses are an increasing cause of severe sepsis globally, leading to more hospitalizations. This update reviews the pathophysiology and clinical aspects of influenza-related severe sepsis.
Area of Science:
- Infectious Diseases
- Critical Care Medicine
- Virology
Background:
- Severe sepsis is often linked to bacterial infections, but viral causes are rising.
- Influenza viruses are increasingly implicated in severe sepsis outbreaks and pandemics.
- Patients present with sepsis directly from influenza or secondary bacterial infections.
Purpose of the Study:
- To provide an updated overview of the pathophysiology of severe sepsis.
- To discuss the clinical manifestations of severe sepsis.
- To highlight the connection between influenza virus infections and severe sepsis.
Main Methods:
- Literature review of recent studies on influenza and sepsis.
- Analysis of pathophysiological mechanisms linking influenza to sepsis.
- Clinical case study review.
Main Results:
- Influenza is a significant and growing cause of severe sepsis worldwide.
- Both direct viral sepsis and secondary bacterial infections post-influenza contribute to severe sepsis.
- Increased hospital admissions for influenza-associated severe sepsis are observed.
Conclusions:
- Influenza represents a critical emerging threat for severe sepsis.
- Understanding the pathophysiology is key to managing influenza-induced sepsis.
- Clinical vigilance for severe sepsis in influenza patients is essential.
More Related Videos
12:21A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness
Published on: September 28, 2022
07:30Design of Cecal Ligation and Puncture and Intranasal Infection Dual Model of Sepsis-Induced Immunosuppression
Published on: June 15, 2019
Related Concept Videos
Influenza
Leaky Scanning
Pneumonia II: Pathophysiology
Pneumonia III: Complications and Assessment
Pneumonia I: Introduction
Acute Inflammation II: Local and Systemic Effects