Table 3 Frequency of antibodies against P. falciparum blood stages determined with ELISA in serum from 233 individuals infected with Plasmodium and classified according to the different clinical expressions of malaria: complicated malaria (CM), uncomplicated malaria (UM) and asymptomatic malaria (AS).
| Â | Frequency of individuals (%) | |||||
|---|---|---|---|---|---|---|
Isotype | CM | UM | AS | |||
| Â | total | high/low avidity | total | high/low avidity | total | high/low avidity |
IgG1 | 50.0 | 58.8/41.2 | 89.9 | 86.4/13.6 | 73.3 | 100.0/0 |
IgG2 | 24.3 | 47.1/52.9 | 47.3 | 85.5/14.5 | 60.0 | 100.0/0 |
IgG3 | 41.4 | 65.5/34.5 | 64.2 | 73.1//26.9 | 60.0 | 66.7/33.3 |
IgG4 | 18.0 | 55.6/44.4 | 16.5 | 77.3/22.7 | 6.7 | 100.0/0 |
IgG | 71.4 | 81.4/18.6 | 79.1 | 93.8/6.2 | 73.3 | 100.0/0 |
IgE | 39.1 | - | 37.6 | - | 35.7 | - |
IgM | 58.6 | - | 39.9 | - | 53.3 | - |
IgA | 46.2 | - | 40.0 | - | 60.0 | - |