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The sparing effect of Coxsackie virus infection on experimental poliomyelitis
The Journal of Experimental Medicine
|July 1, 1951
Abstract:
Young mice infected with Group B Coxsackie virus were rendered markedly resistant to poliomyelitis virus given from 4 to 10 days later. A sparing effect was detectable in somewhat older mice and in young mice inoculated with poliomyelitis after shorter intervals, but in both cases few mice survived. Interference was manifest by survival, by prolongation of the course of poliomyelitis, and by a decreased frequency of poliomyelitis.
Insights
Group B Coxsackie virus infection protected young mice against poliovirus. This viral interference prolonged poliovirus disease course and reduced its frequency, indicating a protective effect.
Area of Science:
- Virology
- Immunology
- Infectious Diseases
Background:
- Poliomyelitis poses a significant public health threat.
- Understanding viral interactions is crucial for developing effective countermeasures.
Purpose of the Study:
- To investigate the impact of Group B Coxsackie virus infection on subsequent poliovirus susceptibility in mice.
- To characterize the nature and extent of viral interference observed.
Main Methods:
- Young mice were infected with Group B Coxsackie virus.
- Poliomyelitis virus was administered at varying intervals (4-10 days) post-Coxsackie infection.
- Outcomes including survival rates, disease course, and frequency of poliomyelitis were monitored.
Main Results:
- Young mice infected with Group B Coxsackie virus showed marked resistance to poliovirus challenge.
- A discernible "sparing effect" was observed in older mice and in young mice challenged after shorter intervals, though survival was limited.
- Interference was evidenced by increased survival, prolonged poliomyelitis duration, and reduced disease incidence.
Conclusions:
- Group B Coxsackie virus infection induces a protective state against poliovirus in a murine model.
- This phenomenon of viral interference highlights complex interactions between different enteroviruses.
- Findings suggest potential avenues for exploring synergistic or antagonistic viral interactions in disease control.
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