PRRS is characterized by respiratory problems, like cough
and dyspnea, in growing and finishing pigs and reproductive
failure in sows, with late term abortion, stillbirth and increased
preweaning mortality [8]. The diagnosis is obtained by virus
isolation or by the identification of antibodies, antigens or
nucleic acid in infected samples. However, there are
limitations on the PRRS diagnosis. Serological tests for
PRRSV normally detect serum antibody response after 14–21
days post-infection, and do not allow the distinction between
infected and vaccinated animals [9]. Virus isolation and
identification has also limits due the wide diversity of PRRSV
strains, being selective between cell cultures [8,10].
PRRS is characterized by respiratory problems, like coughand dyspnea, in growing and finishing pigs and reproductivefailure in sows, with late term abortion, stillbirth and increasedpreweaning mortality [8]. The diagnosis is obtained by virusisolation or by the identification of antibodies, antigens ornucleic acid in infected samples. However, there arelimitations on the PRRS diagnosis. Serological tests forPRRSV normally detect serum antibody response after 14–21days post-infection, and do not allow the distinction betweeninfected and vaccinated animals [9]. Virus isolation andidentification has also limits due the wide diversity of PRRSVstrains, being selective between cell cultures [8,10].
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