Virus shedding in rectal swabs of the 5-day-old pig study (A) and of the 3-week-old pig study (B) as determined by a quantitative PEDV N gene-based rRT-PCR.

<p>The virus titers (Log₁₀Genomic copies/ml) at each time points were mean virus titers of all available pigs (both PCR positive and negative pigs) except the 10⁻⁸ group in the 5-day-old pig study where only one out of 4 pigs was positive in the study period and included in figure (A).