Table 3 Sensitivity of P. falciparum to piperaquine
From: Surveillance of antimalarial drug resistance in China in the 1980s–1990s
Province | In vitro test | In vivo test | ||||||
|---|---|---|---|---|---|---|---|---|
Year | No. of cases examined | Resistance rate(%) | Inhibition concentration(pmol/μl)* | Year | No. of cases examined | Resistance rate(%) | RIII(%)** | |
Hainan | 1985 | 38 | 15.5 | 9.7 ± 9.1 | 1984 | 64 | 17.2 | 0 |
1997 | 70 | 72.9 | 47.9 ± 36.5 | 1997 | 42 | 50.0 | 71.4 | |
Yunnan | 1990 | 47 | 21.3 | 19.0 ± 17.2 | ||||
1993 | 37 | 73.0 | 38.0 ± 32.5 | |||||