Development of the full-length cDNA clones of two porcine epidemic diarrhea disease virus isolates with different virulence
(A) Virus load in feces as measured by Real-Time RT-PCR detection of virus genome in fecal swabs. (B) Fecal scores. Evaluation standard: 0 = normal; 1 = soft (cowpie); 2 = very soft and tend to be liquid 3 = liquid with some solid content; 4 = watery diarrhea with no solid content. Asterisk (*) indicates a significant difference between rBJ2011C and rCHM2013 (**P<0.01; ***P<0.001). Pound (#) indicates a significant difference between rBJ2011C and Mock (#P<0.05; ###P<0.001).