Etiological characteristics of porcine reproductive and respiratory syndrome and the research progress of vaccines
Porcine reproductive and respiratory syndrome(PRRS)is a highly contagious infectious disease charac-terized by piglet deaths,respiratory symptoms,and reproductive disorders such as abortion,stillbirth,mummi-fied fetuses,and boar respiratory symptoms and decreased semen quality.Porcine reproductive and respiratory syndrome virus(PRRSV)can be classified into European(PRRSV-1)and American(PRRSV-2),and there are four lineages of PRRSV virus currently circulating in China:1,3,5 and 8.Vaccines are one of the effective measures to prevent and control PRRSV,but due to the high variability of PRRSV and the serious cross-recombi-nation between viruses and viruses and vaccines,it is more difficult to prevent and control PRRSV.The study of the biological characteristics of PRRSV and vaccines has become a hot topic of research.This article reviews the etiological characteristics of PRRS and the research progress of vaccines,so as to provide reference for the effective prevention and control of PRRS.
Porcine reproductive and respiratory syndrome virusgenome structureVaccineControl
万方数据
维普
