Comparative studies on the pathogenicity and tissue distribution of three virulence variants of classical swine fever virus, two field isolates and one vaccine strain, with special regard to immunohistochemical investigations
2008

Study on Classical Swine Fever Virus Variants

Sample size: 64 publication Evidence: moderate

Author Information

Author(s): Belák Katinka, Koenen Frank, Vanderhallen Hans, Mittelholzer Christian, Feliziani Francesco, De Mia Gian Mario, Belák Sándor

Primary Institution: National Veterinary Institute, Sweden

Hypothesis

How do different virulence variants of classical swine fever virus affect tissue distribution and pathogenicity in pigs?

Conclusion

The study shows that while virulence affects the disease's outcome and duration, it does not change the pattern of viral spread in pigs.

Supporting Evidence

  • The study involved 64 pigs divided into three groups for infection with different virus strains.
  • Clinical signs and tissue distribution were monitored and compared across the groups.
  • Immunohistochemistry was used to detect the virus in tissues, showing differences in viral spread.

Takeaway

This study looked at how different types of a pig virus spread and make pigs sick. It found that some types make pigs sick faster than others.

Methodology

64 pigs were divided into three groups and infected with different strains of the classical swine fever virus, followed by monitoring clinical signs and conducting various diagnostic tests.

Limitations

The study was limited to three specific virus strains and may not represent all variants of classical swine fever virus.

Participant Demographics

Pigs used in the study were clinically healthy weaner hybrids, weighing 20-25 kg.

Digital Object Identifier (DOI)

10.1186/1751-0147-50-34

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