Table 6. Pfmdr1 copy number in parasite isolates collected in patients with primary uncomplicated P. falciparum infection.
| 1996 | 1997 | 1999 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | |
| Total isolates collected | 50 | 53 | 60 | 68 | 76 | 46 | 61 | 67 | 50 |
| Isolates with determination of pfmdr1 copy number | 40 | 49 | 47 | 57 | 70 | 36 | 45 | 55 | 45 |
| Pfmdr1 copy number: | |||||||||
| - 1 | 28 (70%) | 29 (59%) | 27 (58%) | 37 (65%) | 52 (74%) | 24 (66%) | 18 (40%) | 27 (49%) | 21 (47%) |
| - 2 | 8 (20%) | 7 (14%) | 11 (23%) | 10 (18%) | 12 (17%) | 6 (17%) | 13 (29%) | 16 (29%) | 11 (24%) |
| - ≥3 | 4 (10%) | 13 (27%) | 9 (19%) | 10 (17%) | 6 (9%) | 6 (17%) | 14 (31%) | 12 (22%) | 13 (29%) |