ABSTRACT
Described in the paper are study results of some immunobiological properties of 5 field isolates of the porcine reproductive and respiratory syndrome virus (PRRSV), obtained in Russia and Byelorussia in 1998-2001. According to the research work, the PRRSV isolates with different immunobiological properties have been circulating in the territories of Russia and Byelorussia. Three of the 4 examined virus isolates were found to be pathogenic and 1 avirulent to pigs.
Subject(s)
Antibodies, Viral/blood , Porcine Reproductive and Respiratory Syndrome/blood , Porcine Reproductive and Respiratory Syndrome/virology , Porcine respiratory and reproductive syndrome virus , Animals , Anorexia/pathology , Conjunctivitis/pathology , Disease Models, Animal , Fever/pathology , Porcine Reproductive and Respiratory Syndrome/pathology , Porcine respiratory and reproductive syndrome virus/immunology , Porcine respiratory and reproductive syndrome virus/isolation & purification , Porcine respiratory and reproductive syndrome virus/pathogenicity , Republic of Belarus , Russia , Swine , VirulenceABSTRACT
Auesku disease virus--suid herpesvirus type I (SHV-1) genome is analyzed by the restriction fragment pattern analysis. The analyzed strains isolated in CIS countries in 1962-1992 were compared with the European strains. Genomes of field strains Arsk, Turkmenia, and Geneva differed and even lacked the restriction fragments typical of vaccine strains MK-25 or UNIIEV-18S, which agrees with the results of the neutralization test. Immunobiological characteristics of SHV-1 strains are discussed.