Fig. 1.

Persisting fecal viral RNA shedding of calf #1 inoculated with PDCoV strain OH-FD22-P5, but without diarrhea. Calf #1 was inoculated orally with 9.6 log₁₀ GE of the gnotobiotic pig-passaged OH-FD22-P5. It was monitored for long-term clinical signs and virus shedding at PIDs 1 to 16. Rectal swabs were collected daily throughout the experiment. The PDCoV fecal shedding titers were determined by qRT-PCR. The dotted line indicates the detection limit (4.6 log₁₀ GE/ml) of the qRT-PCR