Table 1. Alterations of neopterin and β2-microglobulin levels in the serum of piglets after EMCV infection. Days post inoculation (DPI). Significance: *P<0.05; **P<0.01 compared with CO. One-way ANOVA analyse of neopterin levels between 5 groups i.e. CO, 0 DPI, 1 DPI, 2 DPI, 3 DPI and 4 DPI revealed no significant differences (F = 1.36664, P = 0.2460). One-way ANOVA analyse of β2-microglobulin between 5 groups i.e. CO, 0 DPI, 1 DPI, 2 DPI, 3 DPI and 4DPI revealed no significant differences (F = 1.63256, P = 0.16125)