Abstract：
:A survey involving 77 individuals living in two savannah villages near Bobo Dioulasso (Burkina Faso, West Africa), was performed in June 1987 (before), August-September (during) and January 1988 after the seasonal transmission. The clinical longitudinal study during the seasonal period permitted us to define three different groups in terms of both age and occurrence of malaria attack (MA; greater than or equal to 5000 parasites/mm3 of blood and axillary fever greater than or equal to 37.8 degrees C). The presence of circulating stable antigen (S-Ag) and the antibody responses against exoantigens (E-Ag) of Plasmodium falciparum were also evaluated at three observations periods: beginning, during and after the transmission season. The adult group (III) had the highest rates of IgG Ab to E-Ag although, IgM prevalence to E-Ag was maximal in the group II (individuals with no malaria attack and age less than or equal to 15 years old). Group I (persons with less than or equal to 15 years old and who contracted at least one MA) did not have any S-Ag at the first observation period and showed the lowest rate of antibodies to E-Ag. The probability of occurrence of an MA calculated from these parameters at the beginning of the transmission period were correct in 78.9% of the cases in children (Groups I & II) and in 71.8% of adults during the subsequent transmission period. Therefore these values could be used for evaluating the probability of occurrence of a clinical MA during the transmission period in a mesoendemic area. S-Ag and antibodies to E-Ag could participate positively in the mechanisms involved in the development of the immune status.
journal_name
Acta Tropjournal_title
Acta tropicaauthors
Chumpitazi BF,Peyron F,Boudin C,Picot S,Oury B,Ambroise-Thomas Pdoi
10.1016/0001-706x(92)90064-5subject
Has Abstractpub_date
1992-04-01 00:00:00pages
295-304issue
4eissn
0001-706Xissn
1873-6254pii
0001-706X(92)90064-5journal_volume
50pub_type
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