The co-pathogenesis of influenza viruses with bacteria in the lung
11] Department of Pediatrics, University of Tennessee Health Sciences Center, Memphis, Tennessee 38103, USA. [2] Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.
Abstract:
Concern that a highly pathogenic virus might cause the next influenza pandemic has spurred recent research into influenza and its complications. Bacterial superinfection in the lungs of people suffering from influenza is a key element that promotes severe disease and mortality. This co-pathogenesis is characterized by complex interactions between co-infecting pathogens and the host, leading to the disruption of physical barriers, dysregulation of immune responses and delays in a return to homeostasis. The net effect of this cascade can be the outgrowth of the pathogens, immune-mediated pathology and increased morbidity. In this Review, advances in our understanding of the underlying mechanisms are discussed, and the key questions that will drive the field forwards are articulated.
Insights
Influenza pandemics are a serious threat, and bacterial superinfections significantly worsen outcomes. Understanding these complex co-pathogen interactions is crucial for developing effective treatments and preventing severe influenza complications.
Area of Science:
- Microbiology
- Immunology
- Infectious Diseases
Background:
- Influenza pandemics pose a significant global health threat.
- Bacterial superinfections are a major cause of severe influenza and mortality.
- Understanding co-pathogenesis is vital for mitigating influenza's impact.
Purpose of the Study:
- To review advances in understanding influenza and bacterial superinfection co-pathogenesis.
- To identify key questions for future research in this field.
Main Methods:
- Literature review of recent research on influenza and bacterial co-infections.
- Analysis of mechanisms underlying host-pathogen interactions.
Main Results:
- Co-pathogenesis involves complex interactions disrupting host defenses.
- Immune dysregulation and delayed homeostasis contribute to increased morbidity.
- Pathogen outgrowth and immune-mediated pathology are key outcomes.
Conclusions:
- Further research into the mechanisms of co-pathogenesis is essential.
- Addressing bacterial superinfections is critical for reducing influenza-related mortality.
- Identifying future research directions will advance pandemic preparedness.
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