Diagnosis
Since rotavirus infection is very common in neonatal
pigs, rotavirus should be considered as a cause of diarrhea
in pigs at 1–8 weeks of age. Differential diagnosis
with other infectious agents should be considered,
including Escherichia coli, transmissible gastroenteritis
virus, I. suis, and Clostridium perfringens. The detection
of rotavirus is conducted using fecal samples, intestinal
contents, or tissue sections from acute phases of diarrhea.
Since rotavirus shedding peaks in the first 24
hours after the onset of diarrhea, sample collection
timing is important.