References

1. Wernsdorfer WH, 1991. The development and spread of drug-resistant malaria. Parasitol Today, 7: 297 - 303.

2. Bjorkman A & Phillips-Howard PA, 1990. The epidemiology of drug-resistant malaria. Trans R Soc Trop Med Hyg, 84: 117 - 180.

3. Herbst JM, Taylor LA & Joubert SM, 1985. In vitro chloroquine-resistant Plasmodium falciparum malaria in the Natal/KwaZulu area. S Afr Med J, 68: 749 - 750.

4. Herbst JM, Taylor LA & Joubert SM, 1985. Chloroquine resistance in Plasmodium falciparum  in Natal. S Afr Med J, 72: 627 - 629.

5. Freese JA, Sharp BL, Ngxongo SM & Markus MB, 1988. In vitro confirmation of chloroquine-resistant Plasmodium falciparum malaria in KwaZulu. S Afr Med J, 74: 576 - 578

6. Freese JA, Markus MB & Golenser J, 1991. In vitro sensitivity of southern African reference isolates of Plasmodium falciparum to chloroquine and pyrimethamine. Bull WHO, 69: 707 - 712.

7. Freese JA, Sharp BL, Roussouw EJ, Gous E, Fay SA & Markus MB, 1994. The in vitro sensitivity of southern African isolates of Plasmodium falciparum to amodiaquine, chloroquine, mefloquine, quinine and sulfadoxine/pyrimethamine. S Afr J Sci, 90: 417 - 420.

8. Deacon HE, Freese JA & Sharp BL, 1994. Drug resistant Plasmodium falciparum malaria in the eastern Transvaal. S Afr Med J, 84: 394 - 395.

9. Govere, JM, La Grange, JJ, Durrheim, DN, Freese, JA, Sharp, BL, Mabuza, A, Mngomezulu, N & Bredenkamp, BLF. 1999. Sulfadoxine-pyrimethamine effectiveness against Plasmodium falciparum malaria in Mpumalanga Province, Spouth Africa. Trans R Soc Trop Med Hyg, 93: 644.

10. Fogh S, Jepson S & Effersoe P, 1979. Chloroquine-resistant Plasmodium falciparum in Kenya. Trans R Soc Trop Med Hyg, 73: 228 - 229.

11. Kean BH, 1979. Chloroquine-resistant falciparum malaria from Africa. JAMA, 241: 395 – 396.

12. Bac DJ, Cox GA & Isaacson M, 1985. In vivo and in vitro chloroquine-resistant malaria in South Africa. S Afr Med J, 67: 937 - 938.

13. Visagie NJ & Sieling WL, 1985. Chloroquine-resistant Plasmodium falciparum malaria South Africa. S Afr Med J, 68: 600 - 601.

14. Kruger P, Durrheim DN & Hansford CF. Increasing chloroquine resistance: the Mpumalanga Lowveld story, 1990-1995. S Afr Med J 1996; 73: 280 - 281.

15. WHO, 1996. Assessment of therapeutic efficacy of antimalarial drugs, for uncomplicated malaria in areas with intense transmission. WHO/Mal96.1077.

16. Snounou G, Viriyakosol S, Jarra W, Thaithong S & Brown KN, 1993. Identification of the four human malaria parasite species in field samples by the polymerase chain reaction and detection of a high prevalence of mixed infections. Molec Biochem Parasitol, 58:283 - 292.

17. Roper C, Elhassan IM, Hviid L, Giha H, Richardson W, Babiker H, Satti GMH, Theander TG & Arnot DE, 1993. Detection of very low level Plasmodium falciparum infections using the nested polymerase chain reaction and a reassessment of the epidemiology of unstable malaria in Sudan. Am J Trop Med Hyg, 54: 325 - 331.