Page 9 of articles about PRRS in Articles

Estimated losses associated with M. hyopneumoniae alone and M. hyopneumoniae in combination with PRRSV were among the four health challenges with the highest estimated average loss for all pigs in the study population.

A comprehensive picture of viral variation at the beginning of control and elimination projects is critical for effective monitoring of progress and effectiveness of implementation procedures, and for identification of new virus introductions to farms and to the region.

There are still unknown factors that prevent or block PRRSV replication in the endometrium and the not sufficient number of susceptible cells in the placenta might join forces and cause resistance to placental/transplacental PRRSV infection before 90 days of gestation.

Monitoring protocols in boar studs are often insufficient to timely detect an infection.

After the clinical and serological evaluation it is decided to vaccinate against PRRSV, with which we achieve a gradual improvement in the health status on the farm. Some months later, a severe cough appears in the fattening pigs that later also appears in the nursery and in the sows.

The first goal of the project is to control PRRSv-infections in order to produce negative offspring.

Pathogens that are transmitted mostly through direct, pig to pig, contact are generally contained with today’s biosecurity programs and pig flow strategies. However, pathogens using multiple routes of transmission seem to evade standard biosecurity programs.

A risk of airborne transmission of PRRSV is real, and air filtration can significantly reduce its risk. Area regional approach on PRRSV control/elimination indicates our direction where we should move forward in future.

About 50% of the vehicles used for transporting pigs in the United States are not washed between loads, so this article evaluates the ability of heating treatments to inactivate PRRSv present in manure-contaminated environments.

This farm produces its own gilts from grandmother sows, but taking advantage of the adaptation to meet the needs of the welfare law it was decided to increase its capacity from 600 sows to 1,200.

Clinical disease and outcome following PRRS infection has significant inherited components.

Is the right strategy to get a farm stable, that is, control clinical signs reducing the economic impact of the disease; or should a farm adopt strategies to go “negative”? As for other questions in the epidemiological field, our answer is “it depends”.

One of the challenges when conducting a disease elimination project is to ensure that the pathogen has in deed been eliminated from the herd.

One of the greatest long-term potentials for genomic selection is to identify specific genes or genomic regions with a significant impact on pig health and to aid selection for disease resistance and/or disease tolerance.

In general terms, immunization through vaccination is the easiest and safest way to stabilize a herd.

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