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[Fulminant influenza pneumonia]
1Medisinsk avdeling, Sentralsykehuset i Akershus, Nordbyhagen.
Abstract:
Severe community acquired pneumonia is a common cause of acute respiratory failure requiring ventilator support. Bacteria are by far the most common pathogens, necessitating initial coverage with antibacterial agents. When influenza virus is involved in the aetiology of severe pneumonia, its role in the pathogenesis is most often that of facilitating secondary bacterial pneumonia. The influenza virus itself can, however, cause a severe and rapidly evolving viral pneumonia. We describe two cases of fulminant pneumonia with multiorgan failure, in which extensive microbiologic and serologic diagnostic test did not reveal other causes for the pneumonia than influenza virus. Different clinical lung manifestations of influenza are discussed. Influenza must be considered as an aetiologic possibility in acute respiratory failure.
Insights
Influenza virus can cause severe pneumonia and acute respiratory failure, independent of bacterial infection. This highlights the need to consider influenza as a cause of critical respiratory illness.
Area of Science:
- Medicine
- Infectious Diseases
- Pulmonology
Background:
- Severe community-acquired pneumonia frequently leads to acute respiratory failure requiring mechanical ventilation.
- Bacterial pathogens are the most common cause, necessitating prompt antibiotic treatment.
- Influenza virus often facilitates secondary bacterial pneumonia but can also cause primary viral pneumonia.
Observation:
- Two cases of fulminant pneumonia with multiorgan failure were observed.
- Extensive diagnostic testing ruled out other causes for the pneumonia.
- Influenza virus was identified as the sole etiological agent in both cases.
Findings:
- Influenza virus can independently cause severe, rapidly progressing viral pneumonia.
- Clinical lung manifestations of influenza can vary.
- The study identified influenza virus as a direct cause of severe pneumonia.
Implications:
- Influenza should be considered in the differential diagnosis of acute respiratory failure.
- Early identification and management of influenza-related respiratory failure are crucial.
- This underscores the importance of influenza vaccination and antiviral therapies in preventing severe outcomes.