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Oral chloroquine is the treatment of choice for uncomplicated Plasmodium malariae infections worldwide. We did a prospective 28-day in-vivo assessment of the efficacy of chloroquine for treatment of P malariae on Legundi Island in Lampung Bay, Sumatra, Indonesia. Of 28 patients, one had recurrent parasitaemia on day 28, and two had persistent parasitaemia to day 8. Whole-blood chloroquine and desethylchloroquine concentrations were at ordinarily effective levels (> or = 100 microg/L) on day 8 in both cases of persistent parasitaemia. These findings suggest that clinical resistance to chloroquine by P malariae occurs in the Indonesian archipelago of southeast Asia.

Original publication

DOI

10.1016/S0140-6736(02)09336-4

Type

Journal article

Journal

Lancet

Publication Date

06/07/2002

Volume

360

Pages

58 - 60

Keywords

Adolescent, Adult, Aged, Animals, Antimalarials, Child, Chloroquine, Drug Resistance, Female, Humans, Indonesia, Malaria, Falciparum, Malaria, Vivax, Male, Middle Aged, Plasmodium falciparum, Plasmodium vivax, Polymerase Chain Reaction, Prevalence, Prospective Studies