| emergence and pathogenicity of highly pathogenic porcine reproductive and respiratory syndrome virus in vientiane, lao people's democratic republic. | highly pathogenic porcine reproductive and respiratory syndrome (hp-prrs) characterized by high fever, high morbidity, and high mortality in pigs of all ages emerged in china in 2006 and spread rapidly throughout southeast asia. in july 2010, a highly contagious swine disease with clinical signs similar to those of hp-prrs was observed in the lao people's democratic republic (lao pdr). a field investigation covering 8 pig farms and 1 slaughterhouse in 7 different districts in the capital city of ... | 2012 | 22379051 |