Prairie Swine Centre » Immunity & Vaccination – PIG TALES Health From A Pig’s Point of View

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Posted in: Pork Insight Articles, Production by admin on May 8, 2017

This talk followed 3 main subjects

Vaccination

1.The pig’s immune system

Innate and Adaptive Immunity
- Innate: Present at birth with the same response everytime
- Adaptive: Developed after birth with a specific memory
Vaccines & Immunity
- Adaptive Immunity triggered in 2 ways:1.Exposure to pathogen
  2.Vaccination
  
  Either will provide long-term protection against future infection by the same pathogen

2.Getting the most out of Vaccines

Timing/Doses
- 1.Vaccination should be given ahead of challenge–Pig needs 10-14 days to respond to vaccine
  2.Maternal antibodies can interfere with vaccines
  
  –Depends on maternal Ab level and the vaccine
  
  3.Flexi Dose vaccines can help
- Two Doses Can Help If:1.High level of maternal antibodies are interfering with Dose 1
  2.High level of pathogen challenge in the barn
  
  –Clinical disease with diagnostic confirmation
  
  3.Pigs were sick/stressed when given Dose 1
  
  4.Ensures that all pigs received vaccine (2nd chance)
Diagnostics
- Identifying the pathogen in the pig1.PCR Tests
  2.IHC Tests
- Measure the pig’s response to the pathogen1.Antibody Titer
  2.CMI Response

3.Pigs, People and Vaccinating