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IgG and IgM levels against C. abortus in serum samples from the patient and two asymptomatic work colleagues (Researcher 1 and Researcher 2) expressed as optical densities (OD) by ELISA
| IgG (OD) | IgM (OD) | |
|---|---|---|
| Patient | 1.746 | 0.627 |
| Researcher 1 | 1.235 | 0.137 |
| Researcher 2 | 0.866 | 0.112 |
