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Page 11 of articles about vaccine

Necropsy lesions consistent with enzootic pneumonia, influenza, PRRS and other bacterial infections

2

Immunisation of fattening pigs against influenza: a case study

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.

Scours caused by E. Coli. (Courtesy of Dr. Hector Patullo)

1

Vaccination strategies for the prevention of oedema disease and diarrhoea caused by E.coli. Neonatal and post-weaning diarrhoea (2/2)

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 viremia levels in 2006 and 2012

1

The impact of 6 years of PCV2 vaccination on viral presence and immunity in pigs across the United States

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

Sales of veterinary antimicrobial agents in 25 EU/EEA countries in 2011

3

Ileitis vaccination – A tool to reduce the need for antibiotic treatment

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.

Influence of four commercial PCV2 vaccines on the improvement of production parameters in pigs with maternally derived antibodies

In the presence of high MDA levels, piglets immunized with four commercial PCV2 vaccines showed a significantly reduction of PCV2 infected pigs, viral load...

Field evaluation of the intranasal route as an alternative for administering Streptococcus suis and Haemophilus parasuis bacterins

Pigs in this study appeared to respond very similarly between the IN and IM routes at the time of processing when boosted at weaning by the IM route.

Influence of PCV2 vaccination on the level of antimicrobial consumption

The estimated impact of PCV-2 vaccination revealed a highly significant decline in total antimicrobial drug use on finishing farms.

1

U of S VIDO-InterVac develops vaccine for PEDV

In less than a year, University of Saskatchewan (U of S) scientists have developed and tested a prototype vaccine that could protect the North American swine industry from a virus that has killed more than eight million pigs and cost more than $400 million in lost income since 2013.

Effects of antimicrobials on pig humoral immune responses induced by erysipelas vaccination

The results of the present study indicate that vaccination of pigs against erysipelas in the presence of antibiotics may result in a decrease or enhancement in the production of specific antibodies.

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

1

Transdermal devices in PRRSV immunization (2/2)

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

National reduction in PCV2 prevalence following introduction of vaccination

Since the introduction of PCV2 vaccines in 2006, viral presence and viral loads have greatly decreased, and a genotypic shift dominated by PCV2b has occurred.

Comparative efficacy of concurrent administration of a PCV2 vaccine plus a PRRSV in pigs challenged with both viruses

Under the conditions of this study, it makes no difference to protection whether PCV2 and PRRSV vaccines are administered concurrently. Concurrent vaccination is efficacious for controlling co-infection with PCV2 and PRRSV.

Immunization by cutaneous routes.

Transdermal devices in PRRSV immunization (1/2)

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.

Three months pigs with PCV2-SD. Note the marked spine, indicative of growth retardation, and body pallor

The challenge of Porcine Circovirus type 2 (PCV2) intra-specific taxonomic classification

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.

Heterologous challenge in the presence of maternally-derived antibodies results in vaccine-associated enhanced respiratory disease in weaned piglets

Our data indicates that although high titers of vaccine-derived MDA reduced homologous virus infection, transmission, and disease, MDA alone was sufficient to induce vaccine associated enhanced respiratory disease upon heterologous infection.

Vaccination

1

How PCV2 vaccines work

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.