Volume 19, Number 9—September 2013
Research
High Rates of Mycobacterium tuberculosis among Socially Marginalized Immigrants in Low-Incidence Area, 1991–2010, Italy
Table 2
Distribution and prevalence/rate of TB and LTBI cases, and LTBI conversions*
TB |
LTBI |
|||||||
---|---|---|---|---|---|---|---|---|
Variable | No. cases/population at risk | Prevalence, % (95% CI) | No. cases/population at risk | Prevalence, % (95% CI) | No. cases/p-y at risk | Conv. rates, % (95% CI) | ||
Total | 744/27,358 | 2.7 (2.5–2.9) | 9,180/26,554 | 34.6 (34.0–35.1) | 90/5,241 | 1.7 (1.4–2.1) | ||
Sex | ||||||||
F | 254/11,116 | 2.3 (2.0–2.6) | 3,663/10,849 | 33.8 (32.9–34.7) | 46/2,462 | 1.9 (1.4–2.5) | ||
M | 490/16,242 | 3.0 (2.8–3.3) | 5,517/15,705 | 35.1 (34.4–35.9) | 44/2,777 | 1.6 (1.2–2.1) | ||
Age, y, at test | ||||||||
<20 | 30/2,498 | 1.2 (0.8–1.7) | 405/2,465 | 16.4 (15.0–17.9) | 4/245 | 1.6 (0.1–4.3) | ||
20–29 | 190/10,705 | 1.8 (1.5–2.0) | 3,163/10,500 | 30.1 (29.2–31.0) | 26/1,436 | 1.8 (1.2–2.7) | ||
30–39 | 253/8,659 | 2.9 (2.6–3.3) | 3,480/8,382 | 41.5 (40.5- 42.6) | 41/2,301 | 1.8 (1.3–2.4) | ||
>40 | 271/5,414 | 5.0 (4.4–5.6) | 1,889/4,671 | 40.4 (39.0–41.9) | 19/1,258 | 1.5 (1.0–2.4) | ||
TB incidence (cases/105 p-ys) in immigrant’s country of origin | ||||||||
<25 | 4/679 | 0.6 (0.2–1. 6) | 111/674 | 16.5 (13.9–19.5) | 1/74 | 1.3 (0.2–9.6) | ||
25–49 | 56/3,500 | 1.6 (1.2–2.1) | 1,008/3,440 | 29.3 (27.8–30.8) | 6/814 | 0.7 (0.3–1.6) | ||
50–99 | 48/1,668 | 2.9 (2.2–3.8) | 407/1,615 | 25.2 (23.1–27.4) | 3/311 | 1.0 (0.3–3.0) | ||
100–299 | 602/20,050 | 3.0 (2.8–3.2) | 7,196/19,400 | 37.1 (36.4–37.8) | 74/3,764 | 2.0 (1.6–2.5) | ||
>300 | 34/1,461 | 2.3 (1.7–3.2) | 458/1,425 | 32.1 (29.8–34.6) | 6/278 | 2.1 (1.0–4.8) |
*TB, tuberculosis; LTBI, latent TB infection; p-y, person years; conv., conversion.
1Joint senior authors who contributed equally to this article.