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The influenza virus: Antigenic composition and immune response
Postgraduate Medical Journal
|February 1, 1979
Summary
This study details influenza virus structure, focusing on surface proteins like hemagglutinins and neuraminidases. It explains their role in infection, variation (antigenic drift and shift), and interrelationships, including animal virus connections.
Area of Science:
- Virology
- Immunology
- Genetics
Background:
- Influenza virus structure and protein composition are key to understanding infection.
- Surface proteins, hemagglutinins and neuraminidases, are crucial antigens.
- Viral variation, including antigenic drift and shift, impacts influenza epidemiology.
Purpose of the Study:
- To describe the architecture and chemical composition of the influenza virus particle.
- To explain the role of surface proteins in infection and viral variation.
- To elucidate the interrelationships of influenza A hemagglutinins and explore animal-human virus connections.
Main Methods:
- Description of influenza virus protein constituents and genetic control.
- Explanation of antigenic variation mechanisms (drift and shift).
- Application of immuno-diffusion techniques to analyze hemagglutinin relationships.
Main Results:
- Hemagglutinins and neuraminidases are dominant surface proteins acting as antigens.
- Immuno-diffusion revealed interrelationships among influenza A hemagglutinins over time.
- H0 and H1 are now a single subtype; H2 and H3 represent 1957 and 1968 subtypes.
- Connections between animal and human influenza strains were identified.
Conclusions:
- Understanding influenza virus protein structure and variation is essential for disease control.
- Immuno-diffusion is a valuable tool for classifying influenza virus subtypes.
- Cross-species transmission between animals and humans poses a significant public health concern.