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Updated: Sep 16, 2026
Influenza A Virus Studies in a Mouse Model of Infection
Published on: September 7, 2017
[Experimental animal model of airborne influenza infection]
Abstract:
Experiments were performed for analysing the responses of the host to influenza respiratory tract infections. NMRI and Balb/c mice were infected with various doses of mouse adapted influenza virus (A/PR8/34) by aerosol. Clinical symptoms, rate of survival, total cell yield and total protein content in the lung lavage fluid as well as the course of virus titres showed typical changes depending on time and infection dose. Histologically, after moderate infection doses mice developed mononuclear infiltrations as bronchitis and peribronchitis whereas oedema and severe pneumonitis occurred in highly infected animals. The mouse model seems to be a useful basis for analysing the effects of immunization procedure against influenza.
Insights
This study shows that mouse models effectively mimic host responses to influenza virus infections, detailing clinical signs and lung pathology. This research supports the use of mouse models for evaluating influenza immunization strategies.
Area of Science:
- Immunology
- Virology
- Pathology
Context:
- Influenza virus infections pose a significant public health threat.
- Understanding host responses is crucial for developing effective treatments and vaccines.
- Mouse models are commonly used to study infectious diseases.
Purpose:
- To analyze host responses to influenza virus respiratory tract infections in a mouse model.
- To characterize the clinical, virological, and pathological changes following infection.
- To evaluate the suitability of the mouse model for studying influenza immunization.
Summary:
- NMRI and Balb/c mice were infected with varying doses of influenza A/PR8/34 virus via aerosol.
- Host responses were assessed through clinical symptoms, survival rates, lung lavage fluid analysis (cell yield, protein content), and virus titers.
- Histological examination revealed dose-dependent inflammatory responses, including bronchitis, peribronchitis, edema, and pneumonitis.
Impact:
- The findings validate the use of this mouse model for investigating host-pathogen interactions in influenza.
- This model provides a robust platform for pre-clinical evaluation of influenza vaccines and immunotherapies.
- The study contributes to a better understanding of the pathogenesis of influenza virus infections.
