Table 1. Results in the Latex-Agglutination-Test (LAT) for sera from groups of seropositive and seronegative individuals with acute or latent toxoplasmosis including patients from clinics and volunteers (forest workers).
| Group | Infection status | LAT titre | |||||||||
| <16 | 16 | 32 | 64 | 128 | 256 | 512 | 1024 | 2048 | >2048 | ||
| Patients (n = 21) | Acute* | 1 | 1 | 1 | 3 | 4 | 3 | 4 | 4 | ||
| Patients (n = 53) | Latent# | 1 | 1 | 7 | 10 | 12 | 3 | 8 | 1 | 10 | |
| Volunteers (n = 476) | PositiveΩ | 22 | 44 | 79 | 111 | 95 | 76 | 35 | 9 | 5 | |
| Patients/Volunteers (n = 152) | Negative | 152 | |||||||||
*
Transient detection of T. gondii specific IgM and eventually IgA was regarded as an indication of acute infection.
#
Presence of IgG and absence of IgM/IgA was regarded as an indication for persistent but inactive (latent) infection. In a few patients a persistent IgM response was demonstrated by repeated testing. For these patients, a persistent but inactive (latent) infection was assumed.
Ω
Antibody isotypes not specified.