Estimated prevalence of recently acquired tuberculosis infection among foreign-born residents in 2021
| Incidence of TB in country of origin per 100 000 people | All foreign-born residents | Only foreign-born residents who immigrated in 2020–2021 | ||||||
|---|---|---|---|---|---|---|---|---|
| Prevalence of TB infection acquired in previous 2 yr, % (95% UI) | Prevalence of TB infection overall, % (95% UI) | No. (95% UI) of TB infections to identify to detect 1 person infected in previous 2 yr* | No. (95% UI) of people to test to detect 1 person infected in previous 2 yr | Prevalence of TB infection acquired in previous 2 yr, % (95% UI) | Prevalence of TB infection overall, % (95% UI) | No. (95% UI) of TB infections to identify to detect 1 person infected in previous 2 yr* | No. (95% UI) of people to test to detect 1 person infected in previous 2 yr | |
| 0–9 | 0.02 (0.01–0.05) | 8 (4–17) | 373 (131–1061) | 4725 (1886–10 106) | 0.04 (0.03–0.06) | 2 (2–4) | 183 (97–428) | 2371 (1803–3116) |
| 10–49 | 0.03 (0.01–0.06) | 16 (12–22) | 583 (288–1106) | 3632 (1698–6276) | 0.1 (0.1–0.2) | 9 (8–12) | 88 (58–135) | 546 (414–692) |
| 50–99 | 0.04 (0.02–0.07) | 23 (14–33) | 626 (328–1178) | 2769 (1476–4328) | 0.4 (0.3–0.6) | 20 (15–27) | 54 (29–82) | 230 (160–329) |
| 100–199 | 0.06 (0.05–0.09) | 37 (24–49) | 581 (343–906) | 1607 (1034–2156) | 1.0 (0.8–1.1) | 28 (25–32) | 37 (22–55) | 98 (74–128) |
| ≥ 200 | 0.10 (0.08–0.14) | 35 (30–42) | 326 (228–460) | 943 (697–1266) | 1.4 (1.0–1.9) | 34 (30–38) | 25 (17–36) | 71 (52–102) |
| All | 0.05 (0.04–0.08) | 22 (19–27) | 488 (185–1039) | 2410 (775–7505) | 0.8 (0.6–1.0) | 21 (19–23) | 54 (20–312) | 231 (59–2787) |
Note: TB = tuberculosis, UI = uncertainty interval.
↵* Number of tuberculosis infections that must be diagnosed to detect 1 person infected in the previous 2 years is equal to the prevalence of tuberculosis infection overall divided by the prevalence of tuberculosis infection acquired in the previous 2 years.