FIG 2.

Evaluation of the clinical signs and serum virus neutralization (VN) antibody titers of conventional suckling piglets after challenge with the highly virulent PEDV PC21A strain. (A) Fecal consistency scores of piglet postchallenge. Dots and lines represent individual values and mean values, respectively, in each group. (B) Fecal PEDV RNA shedding profile of piglets. Data are shown as mean values ± standard deviations of each group. VN antibody titers of sera collected at 1 day before challenge (C) and at 7 days postchallenge (D) were titrated by CCIF assay. The titers are expressed as the reciprocal of the highest dilution at which the number of PEDV FFU is blocked 80%.