Chemoresistant P. falciparum malaria emerged in South Sahara Africa during 1978 and is now more than half of the imported malaria in F. Houphouet-Boigny Hospital in Marseilles (France), consequently the annual number of malaria cases has doubled as compared to the previous years. In our study of 47 chemoresistant malaria cases, collected in 1985-1986-1987, mostly contracted in French-speaking Africa, residents and travellers were both equally affected. Curative treatment was quinine IV for severe malaria (34%), sulfadoxine-pyrimethamine (46.8%), and mefloquine (51%).