In the post-weaning period we observe PRRS seroconversion with a mortality of up to 35%. The piglets present symptoms consistent with circovirosis, although the histological and serological results only indicate... read more test →
Length of the quarantine: When we want to introduce negative replacements to a PRRS positive farm, the quarantine, or acclimation rather, must be long. "Long" meaning a period of not... read more test →
Monitoring programs will differ depending on whether they are to be applied to a farm, an area, or a country, but I understand that in this case we are referring... read more test →
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 →
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