Volume 13, Number 1—January 2007
Dispatch
Clinical Diagnosis and Geographic Distribution of Leptospirosis, Thailand
Vanaporn Wuthiekanun*, Nisa Sirisukkarn†, Prayad Daengsupa†, Prangyong Sakaraserane†, Amornwadee Sangkakam*, Wirongrong Chierakul*, Lee D. Smythe‡, Meegan L. Symonds‡, Michael F. Dohnt‡, Andrew T. Slack‡, Nicholas P. Day*§, and Sharon J. Peacock*§
Table
Distribution of suspected and confirmed cases of leptospirosis according to province, Thailand
| Province | Geographic region | Clinically suspected cases (%)* | Laboratory- confirmed cases (%)† | Positive predictive accuracy (95% CI)‡ | Culture-positive cases |
|---|---|---|---|---|---|
| Lumpang | North | 161 (23) | 28 (20) | 17% (12–24) | 2 |
| Udon Thani | Northeast | 223 (32) | 64 (45) | 29% (23–35) | 10 |
| Maha Sarakham | Northeast | 181 (26) | 26 (18) | 14% (10–20) | 1 |
| Ya Sothon | Northeast | 32 (5) | 6 (4) | 19% (7–36) | 1 |
| Chainut | Central | 13 (2) | 3 (2) | 23% (5–54) | 0 |
| Rayong | Central | 45 (6) | 13 (9) | 29% (16–44) | 1 |
| Chanthaburi | Central | 4 (0.6) | 2 (1) | 50% (7–93) | 0 |
| Prachuap Khiri Khun | South | 33 (5) | 1 (0.7) | 3% (0.1–16) | 0 |
| Phattalung | South | 8 (1) | 0 | 0% (0–37) | 0 |
| Total | 700 | 143 | 20% | 15 |
*Percentage of total suspected cases.
†Percentage of total confirmed cases.
‡CI, confidence interval.
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