To answer this question, the first thing to be considered, it´s that it is not possible to differentiate, by a serum antibody test, an animal infected with PRRSv from a... read more test →
To control an unstable PRRS situation, a farm did more than 4 times a PRRS mass vaccination with 2 different commercial NA type MLV (one commercial vaccine in one week,... read more test →
The PCR technique is usually very sensitive and it detects very small amounts of PRRS virus in blood or other samples, but there are some limitations to the interpretation of... read more test →
As many other infectious agents, PRRS virus will benefit when stressors are affecting the pigs as their immune capacity will be reduced, thus helping the virus to infect. PRRS... read more test →
This is a very good question and the frustrating answer is: you cannot know for sure if animals are protected against PRRSv or not. There are no so called “correlates... read more test →
A PRRSv-positive farm has a serious neonatal diarrhoea problem in piglets born from primiparous. Diarrhoea appears in the third day of life, although in some cases it is visible from... read more test →
What protection percentage do PPRS vaccines provide? Modified live PRRS vaccines protect in a variable percentage. It is difficult to specify the percentage, as it will vary depending on the... read more test →
In order to control clinical disease due to PRRSV infection -either with or without the combination of vaccines against PRRSV- it is essential to reduce virus introduction and circulation inside... read more test →
First of all, I think the most convenient thing is to try to determine which were the causes that lead to infection being reactivated on the farm, because the situation... read more test →
The first objective has to be to work with a stable farm. To do so, own production gilts have to become positive to the disease but they have to enter... read more test →
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