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Evaluation of an in Vitro Technique for Detecting Chloroquine Resistant Falciparum Malaria in Thailand
Edward J. Colwell
Edward J. Colwell
U. S. Army Medical Component, Phrabuddhabat Hospital, Saraburi Province, SEATO, APO San Francisco 96346, Thailand
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Pung Phintuyothin
Pung Phintuyothin
U. S. Army Medical Component, Phrabuddhabat Hospital, Saraburi Province, SEATO, APO San Francisco 96346, Thailand
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Narong Sadudee
Narong Sadudee
U. S. Army Medical Component, Phrabuddhabat Hospital, Saraburi Province, SEATO, APO San Francisco 96346, Thailand
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Wisit Benjapong
Wisit Benjapong
U. S. Army Medical Component, Phrabuddhabat Hospital, Saraburi Province, SEATO, APO San Francisco 96346, Thailand
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Suphat Neoypatimanondh
Suphat Neoypatimanondh
U. S. Army Medical Component, Phrabuddhabat Hospital, Saraburi Province, SEATO, APO San Francisco 96346, Thailand
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A simplified in vitro technique was evaluated for reliability and reproducibility in detecting chloroquine-resistant strains of Plasmodium falciparum in Central Thailand. In 55 of 57 subjects the parasites were resistant to chloroquine both in vitro and in vivo. Two subjects who were cured with conventional chloroquine administration had parasites which were resistant in vitro. The major technical limitations of the in vitro test were growth failures with high parasite densities and with immature trophozoites. With these limitations the in vitro technique gave a reliable and reproducible qualitative index of chloroquine resistance in falciparum malaria.
Author Notes
U.S. Army Medical Component, SEATO, APO San Francisco 96346.
Phrabuddhabat Hospital, Saraburi Province, Thailand.
| Past two years | Past Year | Past 30 Days | |
|---|---|---|---|
| Abstract Views | 445 | 222 | 39 |
| Full Text Views | 4 | 1 | 0 |
| PDF Downloads | 2 | 2 | 0 |