Isolation, Pathogenicity, and Comparative Phylogenetic Characteristics of an Intralineage Recombinant NADC34-Like PRRSV in China

Figure 3

Clinical symptoms of piglets in inoculated and control groups. (a) Rectal temperature. The daily rectal temperature was measured, and ≥40.0°C was defined as a fever. (b) Body weight gain rate. The body weight of the HLJ13-inoculated and control group was recorded at 0 and 21 dpi. ns, no significant difference. (c) Scores of clinical symptoms. (d) The ratio of thymus/body weight (g/kg) ratio. At 21 dpi, the weight of the thymus and body was determined, and the ratio of thymus/body weight (g/kg) was measured (ns, ; , ; , ; , ; , ).

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