Table 2 Variations in the chloroquine resistance of P. falciparum (In vitro)
From: Surveillance of antimalarial drug resistance in China in the 1980s–1990s
Province | Year | No. of cases examined | Resistance rate(%) | Mean inhibition concentration(pmol/μl)* | > 6.4 pmol/μl** (%) |
|---|---|---|---|---|---|
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 |