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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).

From: Pattern of humoral immune response to Plasmodium falciparum blood stages in individuals presenting different clinical expressions of malaria

  Frequency of individuals (%)
Isotype CM UM AS
  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 -