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[Efficacy of radical treatment with halofantrine on the prevention of imported Plasmodium falciparum malaria].

We carried out in 1989 a non randomized comparative study in French army units which had been in Central Africa (Central African Republic and Gabon) for 4 months, in order to compare in 758 men on return from malaria areas the usual strategy of chemoprophylaxis with chloroquine and a radical cure by halofantrine (Halfan). Chloroquine was taken by 278 men (100 mg daily for 6 weeks after their return to France); the other 480 men were given two doses of 1,500 mg halofantrine on the third and on the tenth day after their return to France. In Africa both of the units were on chloroquine prophylaxis (100 mg daily for 4 months). The Plasmodium falciparum attack rates were, during a period of 5 months after the return to France, 0.2% in the halofantrine group (1/480) and 4.7% (13/228) in the chloroquine group (P < 10(-4)). The radical cure by halofantrine was more effective than chloroquine prophylaxis in preventing falciparum malaria on return from malaria areas.