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The order in which IgM and IgG antibodies appeared.
| Simultaneous seroconversion N (%) |
47 (57.3%) | IgM and IgG positive at inclusion N (%) |
4 (4.9%) |
| IgM before IgG N (%) |
23 (28.0%) | IgM positive but IgG persistently negative N (%) |
4 (4.9%) |
| IgG before IgM N (%) |
2 (2.4%) | IgG positive but IgM persistently negative N (%) |
2 (2.4%) |
