Table 1.
aThe results are expressed as the number of positive samples/tested.
bBlood samples collected before infection were used as control samples.
cAll the blood samples collected on days 5 post infection were positive by mouse bioassay.
aThe results are expressed as the number of positive samples/tested.
bBlood samples collected before infection were used as control samples.
cAll the blood samples collected on days 5 post infection were positive by mouse bioassay.