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.
CReSA - UAB. Spain
Joaquim Segalés i Coma was born in Vic (Barcelona) in 1968, he graduated at the Veterinary Faculty of the Universitat Autónoma de Barcelona (UAB) in 1991. He then received a doctorate in Veterinary Science in 1996 at the same university after having spent 15 months at the University of Minnesota (UM) in the USA, under the codirectorship of Dr. Mariano Domingo (UAB) and Dr. Carlos Pijoan (UM). In 2000 he achieved a diploma at the European College of Veterinary Pathology (ECVP). In year 2004 he graduated at the European College of Porcine Health and Management (ECPHM), of which he is a founding member and its current vice-president. He currently works as professor at the Department of Animal Anatomy and Welfare at the Veterinary Faculty of the UAB, where he teaches in the area of pathologic anatomy and porcine clinic. He is also the Director of the Centre de Recerca en Sanitat Animal (CReSA).
Dr. Segalés has taken part in numerous research projects, at both a national and a European level. He is especially skilled in different porcine diseases and has collaboration agreements with different enterprises, both national and European, that are involved in the sector. Of the many lines of research that he has participated in, the most important are the Porcine Reproductive and Respiratory Syndrome Virus (PRRSV), Haemophilus parasuis, the Aujeszky Disease Virus (ADV), the Hepatitis E Virus (HEV), torque teno sus virus and diseases associated with Porcine Circovirus type 2 (PCV2). It is also worth mentioning that Dr. Segalés participated in the first identification in Spain of the Post-weaning Multi-System Wasting Syndrome or Porcine Circovirus in 1997 and of the Porcine Dermatitis and Nephropathy Syndrome in 1996. As a result of these investigations he is the co-author of more than 200 articles published in international scientific journals, as well as being co-author of ten chapters of books with international prestige of which perhaps the most important is Porcine circovirus diseases in the 9th and 10th edition of the book Diseases of Swine. He is also the co-author of a book on swine livestock necropsy as well as three books on clinical cases in swine.
Updated CV 14-May-2013
This article deals with the factors to be considered for deciding the optimal time of vaccination against PCV2 and shows the results of a study that evaluates the efficacy of different vaccination programs in PCV2 subclinically infected piglets.
Recently, PCV2 has been suggested as a pathogen able to induce diarrhoea in pigs, and PCV2-enteric disease (PCV2-ED) as a separate entity within porcine circovirus diseases (PCVDs) has been proposed.
The loss associated with decreased ADWG was of 13.1 € and 7.5 €/pig at 21 weeks of age for pigs with high and medium serum PCV2 load under the scenario studied.
The virus is highly resistant in the environment, showing also high resistance to chemical and thermal treatments.
Might be there is a little doubt nowadays on the beneficial clinical and economic effects of PCV2 vaccination in subclinical infections in piglets, but… which is the role that sows play in the whole picture?
Experimental Mhyo and PCV2 co-inoculations have resulted in somewhat divergent results.
The PCV2 has been associated, in an ongoing way and throughout time, with more pathologies called, collectively, diseases associated with the PCV2 (PCVDs): PCV2 systemic disease, PCV2 lung disease, PCV2 enteric disease, PCV2 reproductive disease,PCV2 subclinical infection and porcine dermatitis and nephropaty syndrome.