[Hemoglobinoses and hemoglobinopathies in the Central African Republic. 2].

Part of an inquiry which took place in R. C. A. from january 1972 to january 1975, we are able to give results concerning the prevalence of haemoglobin S in three new prospected regions and the value of sickling test. Cellogel electrophoresis sorted 20 0/0 of haemoglobin S bearers (AS or SS) od of 527 school children. On the same lot, sickling test by field practice, revealed only 7 0/0 and on the whole lot of examined individuals (684) only 8 0/0. This confirms that sickling test, when alone, is not reliable enough to appreciate the prevalence of haemoglobin S.