Difference between revisions of "Transmissible Gastroenteritis Virus"
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**Less than 2 weeks of age: typically fatal | **Less than 2 weeks of age: typically fatal | ||
**Over 5 weeks of age: recovery and immunity | **Over 5 weeks of age: recovery and immunity | ||
| − | *For more, see | + | *For more, see [[Intestines Catarrhal Enteritis - Pathology#Transmissible Gastro-Enteritis (TGE)|here]] |
====Epidemiology==== | ====Epidemiology==== | ||
Revision as of 20:15, 16 October 2008
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This article is still under construction. |
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Antigenicity
- Single serotype
Hosts
- Pigs
Pathogenesis
- Malabsorptive diarrhoea
- All ages susceptible but effects vary on age:
- Less than 2 weeks of age: typically fatal
- Over 5 weeks of age: recovery and immunity
- For more, see here
Epidemiology
- Largely replaced by a respiratory variant in Europe
- Highly contagious spread by orofecal transmission
- Two forms of infection can occur:
- Epizootic: Explosive infection
- Introduction to a non-immune herd spreads quickly
- Enzootic: Persistent infection
- Immune sows provide passive immunity but piglets will suffer mild symptoms post-weaning
- Epizootic: Explosive infection
Diagnosis
- Fluorescent microscopy on SI sections
Control
Explosive infection:
- Separate sows 2 weeks from farrowing
- Exposure of flock will serve to immunise
- No effective vaccines exist