Table 2.
Variations in the chloroquine resistance of P. falciparum (In vitro)
| Province | Year | No. of cases examined | Resistance rate (%) | Mean inhibition concentration ( pmol /μ l )* | > 6.4 pmol /μ l ** (%) |
|---|---|---|---|---|---|
| Hainan |
1981 |
48 |
97.7 |
10.46 ± 7.14 |
83.3 |
| 1997 |
45 |
26.7 |
1.63 ± 1.17 |
6.7 |
|
| Yunnan | 1981 |
39 |
97.4 |
17.2 ± 12.6 |
58.9 |
| 1999 | 18 | 77.8 | 4.4 ± 3.1 | 19.5 |
*The mean drug concentration for complete inhibition of schizont maturation.
**Percentage of cases with complete inhibition of schizont maturation.