Page 3 of articles about vaccine in Articles

As the risk of HEV exposure appears to rise in the human population an opportunity for production and certification of HEV free meat products, especially pork, is emerging.

The decrease in PCV2a and PCV2b genotypes over time and the increase in PCV2d in 2012 may be due more to other, unknown, factors than to immunological selection resulting from PCV2a-based vaccination.

Although the use of vaccination was effective in stabilizing the sows, the results of these case studies emphasized that elimination of PRRSV from the nursery can only be accomplished if vaccination and partial depopulation/ disinfection are supported by strict implementation of all recommended management procedures, including AI/AO.

This article explains the main preventive measures against App, focusing on the use of antimicrobials and vaccines.

This case study describes an outbreak in a commercial unit which proved difficult to stop without vaccine. Since 2014 an increasing number of cases of this disease have been reported in Europe though it remains unclear why it has reappeared.

The reasons behind the vaccination against influenza virus on a group of fattenig units with recurrent respiratory clinical pictures that belong to an integrated production system are discussed. Impact on production parameters and economic results are also shown.

Achieving good levels of colostral immunity by vaccinating sows is the first step to prevent scours; subsequently, active pre or post-weaning immunization must be added to prevent post-weaning diarrhoea.

PCV2 vaccination is nearly universal. Has viral presence decreased after 6 years of vaccination? Could vaccination policies be changed?

In the coming years, the use of antimicrobials will be more closely regulated, following the guidelines set by the WHO in its global report on antimicrobial resistance in 2014.

Needle-free injection technology improves the dispersion of vaccines throughout the tissue.

NFID administered swine vaccines can use half to a tenth of the dose required for intramuscular vaccines because of the higher antigen dispersion and contact with the antigen presenting cells found in skin.

All available vaccines in the European and North-American market are based on PCV2a genotype, while the most prevalent ones are PCV2b and PCV2d ones. Although significant level of cross-protection among these three genotypes has been demonstrated, it would be interesting to assess if vaccine efficiency would be equivalent in front of all these different genotypes.

Despite not having a consistent post-vaccination serological reaction, vaccinated animals behave differently from unvaccinated animals under field conditions.The article explains why vaccines offer protection.

In practice, and to have active-acquired antibodies ready at weaning, piglets should be immunised 10 days to 2 weeks before weaning.

Effect of modified-live porcine reproductive and respiratory syndrome virus vaccine on the shedding of wild-type virus from an infected population of growing pigs.

After 24 years of experience we still don't have a control plan agreed upon and accepted by all our technical community. Why?