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Bulletin No. 19 - Fall 2004
18th IPVS Congress, Hamburg, Germany, 2004PMWS-PCV2-PCVD-PDNS
OPRIESSNIG T, MENG XJ, HALBUR PG
Effect of timing of vaccination with commercially available bacterin on PCV2-associated lesions
Proceedings of the 18th IPVS Congress, Hamburg, Germany, 2004 - Volume 1:96
The use of vaccines against Mycoplasma hyopneumoniae has already been demonstrated to enhance the clinical and histopathological impact of PCV2 infection. This experiment was designed so as to compare the effect of different timings of vaccination with a M. hyo bacterin (M+PAC® Schering-Plough Animal Health, Inc.) in pigs challenged with a PCV2 isolate at 8 weeks of age. The authors conclude that lowest impact of PCV2 infection was obtained in pigs vaccinated 4-2 weeks prior to challenge i.e. 2-shot vaccination at 4 and 6 weeks versus 2-4 weeks and 8-10 weeks of age.
Note from FJ: it can be also interpreted as early immune stimulation as well as vaccination at the time clinical sign use to occur do worsen the situation, as it is often seen in the fields
