Table 2.
Severity of disease after passive transfer of sera and challenge with PEDV CV777
| Sow group | Days after challenge with PEDV strain CV777 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| rSPV-St | ++a/+b/+c/+d | +++a/+++b/+c/+d | ND | ND | ND | ND | ND | ND | ND | ND |
| Inactivated-CV777 | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d | –a/–b/-c/-d |
| Inactivated-SQ2014 | ++a/+b/+c/+d | +++a/+++b/+c/+d | +++a/+++b/+c/+d | ND | ND | ND | ND | ND | ND | ND |
| wtSPV | ++a/+b/+c/+d | +++a/+++b/+c/+d | ND | ND | ND | ND | ND | ND | ND | ND |
| PBS | ++a/+b/+c/+d | +++a/++b/+c/+d | ND | ND | ND | ND | ND | ND | ND | ND |
ND: not determined due to the death of this piglet
a Severity of diarrhea: – no diarrhea; + mild diarrhea; ++ moderate diarrhea; +++ severe diarrhea
b Degree of appetite loss: – normal appetite; + slight loss of appetite; ++ moderate loss of appetite; +++ no appetite
c Loss of mental stability: - mental stability; + mentally unstable
d PEDV detection in feces by RT-PCR: - negative; + positive