1,351
edits
Changes
Jump to navigation
Jump to search
Transmissible Gastroenteritis Virus (view source)
Revision as of 20:11, 16 October 2008
, 20:11, 16 October 2008New page: {{unfinished}} {{toplink |linkpage =Viruses |linktext =VIRUSES |sublink1=Coronaviridae |subtext1=CORONOAVIRUSES |pagetype =Bugs }} <br> ====Antigenicity==== *Single serotype ====Hosts==...
{{unfinished}}
{{toplink
|linkpage =Viruses
|linktext =VIRUSES
|sublink1=Coronaviridae
|subtext1=CORONOAVIRUSES
|pagetype =Bugs
}}
<br>
====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
{{toplink
|linkpage =Viruses
|linktext =VIRUSES
|sublink1=Coronaviridae
|subtext1=CORONOAVIRUSES
|pagetype =Bugs
}}
<br>
====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