TABLE 1.
Summary of bovine sera examined by MAb cELISA for N. caninum antibodies
| Group | N. caninum status | No. of sera tested |
|---|---|---|
| 1 | Abortion-defined positivea | 42 |
| Abortion-defined negativeb | 142 | |
| 2 | IFA-defined positivec | 170 |
| IFA-defined negatived | 160 | |
| 3 | Unknown statuse | 4,323 |
a
N. caninum abortion positive: IFA positive at a serum dilution of 1:200 and originating from dam aborting N. caninum-infected fetus as determined by histopathology and N. caninum-specific immunohistochemistry.
b
N. caninum abortion negative: negative by IFA at a serum dilution of 1:200 and originating from dams aborting fetuses without N. caninum-compatible histological lesions.
c
N. caninum IFA positive at a serum dilution of 1:200; N. caninum abortion status unknown.
d
N. caninum IFA negative at a serum dilution of 1:200; N. caninum abortion status unknown.
e
N. caninum IFA or abortion status unknown.