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973 bytes added , 20:11, 16 October 2008

New page: {{unfinished}} {{toplink |linkpage =Viruses |linktext =VIRUSES |sublink1=Coronaviridae |subtext1=CORONOAVIRUSES |pagetype =Bugs }} <br> ====Antigenicity==== *Single serotype ====Hosts==...

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|linktext =VIRUSES
|sublink1=Coronaviridae
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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

====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

====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

Bepocock

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Transmissible Gastroenteritis Virus (view source)

Revision as of 20:11, 16 October 2008