Page 18 of articles about PRRS

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.