Page 15 of articles about PRRS

From 2000 to 2007 a PRRSv eradication plan was developed successfully in Chile. in October 2013 the spread of a new PRRS virus to several important Chilean pig companies was confirmed.

A lot of work needs to be done for controlling HP-PRRS completely. The implementation of proper regional control and eradication programs against PRRS is necessary in China and the Asian countries. Meanwhile, the increasing diversity of the PRRSV should be taken into consideration for developing more effective and safe vaccines.

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.