Volume 14, Number 10—October 2008
Dispatch
Molecular Surveillance for Multidrug-Resistant Plasmodium falciparum, Cambodia
Naman K. Shah, Alisa P. Alker, Rithy Sem, Agustina Ika Susanti, Sinuon Muth, Jason D. Maguire, Socheat Duong, Frederic Ariey, Steven R Meshnick, and Chansuda Wongsrichanalai
Table 1
Clinical characteristics of study participants at 5 surveillance sites, Cambodia, May 2004–December 2006*
| Characteristic | Pailin | Kg. Seila† | Chumkiri | Memut | Rattanakiri |
|---|---|---|---|---|---|
| Total no. | 146 | 11 | 116 | 172 | 299 |
| Male, no. (%) | 98 (67.1) | 9 (81.8) | 97 (83.6) | 62 (36.1) | 187 (62.5) |
| Adult (>18 y), no. (%) | 128 (87.7) | 11 (100.0) | 109 (94.0) | 172 (100.0) | 221 (73.9) |
| Parasitemia,‡ geometric mean | 15,001 | 5,975 | 13,503 | 19,800 | 22,443 |
| Parasitemia >50,000, no. (%) | 47 (32.2) | 4 (36.4) | 33 (28.7) | 68 (39.8) | 120 (40.4) |
| Gametocytemia, no. (%) | 8 (5.5) | 1 (9.0) | 11 (9.6) | 12 (7.0) | 8 (2.7) |
| Smear-positive malaria in past y, no. (%) | 35 (39.3) | 2 (20.0) | 25 (61.0) | 13 (7.6) | 127 (46.7) |
| Antimalarial drug taken in past mo, no. (%) | 13 (14.4) | 2 (18.2) | 20 (17.2) | 64 (37.2) | 6 (2.0) |
| Mixed infection, no. (%) | 6 (4.1) | 1 (9.1) | 8 (7.0) | 3 (1.8) | 6 (2.0) |
| No. d of illness, median (range) | 3 (1–6) | 4 (2–6) | 6 (1–6) | 4 (2–6) | 4 (0–6) |
*The missing values by category include parasitemia (n = 4), gametocytemia (n = 4), smear-positive malaria in past year (n = 160), antimalarial drug taken in past month (n = 56), mixed infection (n = 4), and no. of d of illness (n = 21).
†Baseline differences were most likely due to small sample size.
‡Parasites/μL.
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