On a farrow to finish farm where sows are vaccinated every 3 months against PRRS virus and the piglets are not vaccinated, the piglet's ELISA results are these ones: 3-week-old... read more test →
Attenuated PRRS vaccines (Modified Live Vaccines) are not designed to pass immunity to the piglets, although they will. How do naïve animals response to PRRS vaccines? PRRS live attenuated... read more test →
The inoculation of PRRS live virus from the farm as a method to acclimatise the gilts has been used extensively with positive results provided that: It can be done on... read more test →
Unfortunately, the PRRS intranasal immunisation route does not provide advantages, but disadvantages, with respect to the intramuscular route. PRRS intranasal vaccination: Disadvantages Long ago, based on the experiences with... read more test →
When talking about PRRS vaccination, it's always better to do a blanket vaccination 3 times a year. The reason of this is directly related to the goals we want to... 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 →
Yes, there is not data showing any adverse effect. Even when you just do a blanket PRRS vaccination with a MLV some piglets can become infected with vaccine virus. This... 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 →
Preventing a farm to be infected by PRRS virus is not so difficult as long as the farm has a reasonable location, and obviously it is necessary some basic biosecurity... read more test →
With regards to PRRS vaccines, the general opinion is that MLV vaccines are a better option than killed ones to protect breeding animals. It is true that killed vaccines show... read more test →
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