Page 9 of articles about PRRS in Articles

PRRSV by itself may induce mild-to-severe respiratory disease but rarely results in mortality.

Resolving the basis of viral and host variation will require identification and characterization of key B- and T-cell epitopes conserved among diverse PRRSV, and of the molecular and structural details of key effector antibodies, T-cell antigen receptors, and MHC molecules that mediate broad, cross-protective immunity.

One month after the beginning of the outbreak of reproductive failure in sows, acute respiratory disorder and diarrhoea that was non-responsive to antibiotics started in weaned pigs aged 6-8 weeks...

The total cost of productivity losses to US producers is estimated at US$664 million annually but productivity losses are shifting from the growing pig herd to the sow herd.

The prevalence of pleurisy is surprisingly high among pigs at slaughter. A recent review of available data ranged from 12.5% in the UK, 26% in Spain, to 41% of individual pigs slaughtered in one Norwegian study.

This study demonstrates the added profitability that air filtration can give to sow farms located in highly dense swine regions. However, it is important to point out that these figures are long term averages and not necessarily predictors for individual herds.

More than half of the pig population is housed in only one region with a very high pig density and it is very likely that elimination would only be possible with the help of a mandatory national program supported by the EU.

Surveillance includes the gathering, recording and analysis of data as well as the dissemination of information to interested parties so that actions can be taken to control disease.

The desired result of the strategic management of replacement gilts at a company level is to minimize the economical losses potentially caused by PRRS.

The litter size of the recent and the last farrowing batches was significantly reduced, and the suckling pigs showed an obvious varying weight, condition and viability.

Among the numerous genetically distinct isolates that are identified in high pig density areas every year, only a few are able to be transmitted between herds and even less able to widely spread and dominate the entire region or system.

There are 3 potential options to stabilize BTW herds following an outbreak that have all proven successful over time. They have very different cost and risk profiles and a through economic assessment is needed to determine what the best course of action is for each new outbreak.

This study, based on some 120,000 sows, quantifies the reduction of the risk of introducing PRRS viruses when using air filtering.

It was developed in USA as a way to improve communication of what needed to be done to improve the chances of success in stabilizing and managing breeding herds.

In July 2010 a severe respiratory disease occurred in the farm: coughing in gilts, and coughing and depression in fatteners concomitantly to an increase of the mean stillborn and mummified piglet rate in a batch of sows.

This case starts with abortions that occur dramatically in April. They begin on Saturday the 23rd and during the following week continue until reaching 34 abortions.