Prevention and control of porcine circovirus[circovirosis]Joaquim Segalés We may have some highly efficient vaccines, but we shouldn’t forget that for their application we must obtain good diagnostic information, and that in all cases we should not lose sight of good management and a good control of the concomitant diseases. |
Risk and/or triggering factors of porcine circovirus[circovirosis]Joaquim Segalés Between 1995 and 1997, at the beginning of an epizootic called “maladie de l’amagrissement du porcelet” (MAP), it was observed that the farms that were most affected and that had the most losses, generally presented obvious deviations from what we would consider to be a suitable management of the animals and facilities. This is why Dr. François Madec made a list of management practices with the aim of improving the anomalous situation observed. |
Immunology against PCV2: What difference is there between a subclinically affected animal and an animal with porcine circovirus?[circovirosis]Joaquim Segalés Pigs that are not affected by the disease tend to have a quantity of sero-neutralizing (and also total) antibodies against PCV2, which is significantly greater than those that cause disease |
Diagnosis of porcine circovirus: individual and farm criteria[circovirosis]Joaquim Segalés The aim of this article is to discuss those differentiating topics which are relevant from a practical point of view and which in some way elude the disease's definition. |
Clinical signs and autopsy findings: can porcine circovirus be diagnosed on the farm?[circovirosis]Joaquim Segalés The autopsy is always an important diagnostic element for the majority of diseases, and this is the same for porcine circovirosis. |
Epidemiology and transmission of PCV2 and of porcine circovirus[circovirosis]Joaquim Segalés It is assumed that the most probable route of PCV2 transmission is the oronasal tract, which would indicate that horizontal transmission (sow-piglet or piglet-piglet) is a frequent or very frequent occurence |
Etiology: porcine circovirus type 2 (PCV2)... where is “agent X”?[circovirosis]Joaquim Segalés Porcine circovirus type 2 is a viral agent with a relatively simple structural organization of which there are two distinct genotypes (1 and 2), it is not clear if they have similar virulence. Since some years ago there has been a hypothesis developing that there exists an “agent X” that would play a role as a trigger factor of the disease in 100% of cases. |
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