TABLE 2.
Incidence of HIV-1 infection among IDUs in five counties of province A, China, in 2004
| County | No. of participants | No. HIV+a | % HIV prevalence % (95% CIb) | BED- CEIA+c | % HIV-1 incidence (95% CIb) |
|---|---|---|---|---|---|
| A | 2,570 | 446 | 17.4 (15.9-18.8) | 40 | 4.4 (3.2-6.0) |
| B | 7,307 | 825 | 11.3 (10.6-12.0) | 116 | 4.2 (3.5-5.0) |
| C | 1,246 | 103 | 8.3 (6.7-9.8) | 8 | 1.7 (0.9-3.4) |
| D | 2,001 | 10 | 0.5 (0.2-0.8) | 5 | 0.6 (0.2-1.4) |
| E | 2,272 | 17 | 0.7 (0.4-1.1) | 4 | 0.4 (0.2-1.0) |
a
Number of participants whose serum tested positive in an EIA, confirmed with Western blotting.
b
95% CI, 95% confidence interval.
c
Number of participants whose results were categorized as recent infections by BED-CEIA.