| in vitro susceptibility of plasmodium falciparum to chloroquine, amodiaquine, quinine, mefloquine, and sulfadoxine/pyrimethamine in equatorial guinea. | between march 1990 and june 1992, a study was carried out in equatorial guinea on the in vitro response of plasmodium falciparum to different antimalarial drugs. field work for the study was conducted both in the country's island region as well as on the mainland, and resistant isolates were found to exhibit interregional differences. on the island of bioko, 204 tests were performed with 16% (11 of 69) resistant to chloroquine, 9% (4 of 46) resistant to quinine, 14% (6 of 43) resistant to a comb ... | 1995 | 7485712 |