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Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
Published on: June 28, 2018
Importance of viruses in acute otitis media
Johanna Nokso-Koivisto1, Tal Marom, Tasnee Chonmaitree
1aDepartment of Otorhinolaryngology, Helsinki University Central Hospital, Helsinki, Finland bDepartment of Otolaryngology-Head and Neck Surgery, Edith Wolfson Medical Center, Tel Aviv University Sackler School of Medicine, Holon, Israel cDivision of Infectious Diseases, Department of Pediatrics, University of Texas Medical Branch, Galveston, Texas, USA.
Purpose Of Review:
Acute otitis media occurs as a complication of viral upper respiratory tract infection. Bacterial otopathogens and respiratory viruses interact and play important roles in acute otitis media development. A better understanding of viral and bacterial interactions may lead to innovative ways to lessen the burden of this common childhood disease.
Recent Findings:
There has been increasing evidence that acute otitis media occurs during upper respiratory infection, even in the absence of nasopharyngeal bacterial colonization. Among the types of viruses associated with acute otitis media, respiratory syncytial virus continues to be the most commonly detected. It is still unclear whether viral load plays an important role in acute otitis media development, but symptomatic upper respiratory tract infection (as opposed to asymptomatic viral infection) is crucial. Widespread use of bacterial and viral vaccines in young children, including pneumococcal conjugate and influenza vaccines, has led to the reduction in otitis media-related healthcare use between 2001 and 2011. There has been no new vaccine against respiratory viruses other than influenza.
Summary:
Progress has been made toward the reduction of the burden of acute otitis media in the last decade. Success in reducing acute otitis media incidence will rely mainly on prevention of nasopharyngeal otopathogen colonization, as well as reduction in the incidence of viral upper respiratory tract infection.
Insights
Acute otitis media (AOM) is linked to viral upper respiratory infections. Preventing viral infections and bacterial colonization is key to reducing childhood AOM burden.
Area of Science:
- Pediatrics
- Infectious Diseases
- Otolaryngology
Background:
- Acute otitis media (AOM) frequently complicates viral upper respiratory tract infections (URTIs).
- Interactions between bacterial otopathogens and respiratory viruses are critical in AOM development.
- Understanding these viral-bacterial dynamics offers potential for novel AOM prevention strategies.
Purpose of the Study:
- To review current understanding of viral and bacterial roles in AOM.
- To explore how viral-bacterial interactions influence AOM pathogenesis.
- To identify strategies for reducing the global burden of AOM in children.
Main Methods:
- Review of recent scientific literature on AOM pathogenesis.
- Analysis of evidence linking viral URTIs to AOM development.
- Examination of the impact of vaccination on AOM incidence.
Main Results:
- AOM can occur during viral URTIs without bacterial colonization.
- Respiratory syncytial virus is the most frequently identified virus in AOM cases.
- Symptomatic viral infections, not asymptomatic ones, are crucial for AOM development.
- Vaccines (pneumococcal, influenza) have reduced AOM-related healthcare use.
- No new vaccines for respiratory viruses beyond influenza have been introduced.
Conclusions:
- Significant progress has been made in reducing AOM burden over the past decade.
- Future AOM reduction strategies must focus on preventing bacterial colonization and viral URTIs.
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Etiology
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