Influenza A Virus Infection
Influenza A Virus Infection - Related Videos
10:44
Influenza A Virus Studies in a Mouse Model of Infection
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Cited by 38 •
2017
Influenza A viruses (IAVs) are important human respiratory pathogens. To understand the pathogenicity of IAVs and to perform preclinical testing of novel vaccine approaches, animal models mimicking human physiology are required. Here, we describe techniques to evaluate IAV pathogenesis, humoral responses and vaccine efficacy using a mouse model of infection.
02:34
Intranasal Infection of a Mouse with a Pathogenic Influenza Virus
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2026
Source: Wang, M., et al, Evaluation of T Follicular Helper Cells and Germinal Center Response During Influenza A Virus Infection in Mice. J. Vis. Exp. (2020).This video demonstrates intranasal infection of a mouse with a pathogenic influenza virus to establish a respiratory tract infection. The procedure outlines the administration of the virus into the nasal cavity. The virus enters host cells, replicates, and activates the immune system.
03:00
Impedance-Based Cellular Assay to Measure Multiplicity of Infection of Influenza Virus
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2025
In this video, we discuss the correlation between the CIT50 and the multiplicity of viral infections. The virus-infected cells display cytopathic effects, causing their death and detachment from the gold microelectrode, which in turn, reduces the impedance.
11:20
Affinity Purification of Influenza Virus Ribonucleoprotein Complexes from the Chromatin of Infected Cells
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Cited by 3 •
2012
Influenza viruses replicate their RNA genome in association with host-cell chromatin. Here, we present a method to purify intact viral ribonucleoprotein complexes from the chromatin of infected cells. Purified viral complexes can be analyzed by both Western blot and primer extension of protein and RNA content, respectively.
03:49
A Luciferase-Fluorescent Reporter Influenza Virus to Track Viral Infections
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2025
This video demonstrates a method to track viral infections in mouse models using a recombinant luciferase and fluorescence protein-expressing bi-reporter Influenza A virus. This method enables both in vivo and ex vivo studies, enabling researchers to gain insights into viral dynamics and the effects of interventions.
FAQs
These events control different stages of entry. Hemagglutinin first recognizes sialic acid receptors on airway epithelial cells, helping the virus enter the cell. Acidification within the endosome then triggers membrane fusion, allowing the viral genome to reach the cell interior. Distinguishing these checkpoints helps researchers analyze where entry may be interrupted during infection.
Innate responses provide an early defensive reaction that includes interferons and inflammation, whereas adaptive responses involve antibodies and T cells. Together, these components help control viral infection and disease. Studying their separate and coordinated effects allows immunologists to connect immediate host responses with longer-term immune protection.
Airway epithelial cells provide the cellular environment in which influenza A virus enters, replicates its RNA, assembles new particles, and releases them. Examining infection in these cells links viral replication to the immune signals generated in respiratory tissue. This connection is important for understanding how local infection leads to broader inflammatory and adaptive responses.
A comprehensive investigation can examine interferon production, inflammatory responses, antibody activity, and T-cell responses. These measurements address both early innate control and later adaptive control of infection. Considering all four areas gives a broader picture of how the host responds, rather than evaluating viral replication or disease outcomes in isolation.
Research on this infection reveals how antibodies, T cells, interferons, and inflammatory responses relate to control of disease. That immunological information can guide vaccine design by identifying the types of host protection that should be elicited or evaluated. The goal is to connect immune response patterns with meaningful control of respiratory infection.
Understanding the infection process identifies viral stages and host responses that can be examined during antiviral development, while surveillance tracks emerging strains in the broader infection context. Together, these applications connect mechanistic virology with public-health monitoring. They help researchers relate changes in circulating viruses to priorities for treatment research and ongoing immune evaluation.