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Table 2 Correlation between trachoma clinical signs and ocular C. trachomatis infection as detected by Amplicor in children aged 0–9 years

From: Impact of a single round of mass drug administration with azithromycin on active trachoma and ocular Chlamydia trachomatis prevalence and circulating strains in The Gambia and Senegal

Study

No. of children examined

No. of children with TF (%) [95% CI]a

No. of children with TI (%) [95% CI]a

No. of infected children (%) [95% CI]a

No. of children with TF who were infected (%) [95% CI]a

No. of infected children who had TF (%) [95% CI]a

No. of children with TI who were infected (%) [95% CI]a

No. of infected children who had TI (%) [95% CI]a

No. of children with active trachoma who were infected (%) [95% CI]a

No. of infected children who had active trachoma (%) [95% CI]a

Gambia baseline

1171

280 (23.9)

[21.5–26.5]

2 (0.2)

[0.02–0.6]c

35 (3.0)

[2.1–4.]

24/280 (8.6)

[5.6–12.5]

24/35 (68.6)

[50.7–83.1]

0/2 (0)

[0–84.2 b]

0/35 (0)

[0–100.0 b]

24/280 (8.6)

[5.6–12.5]

24/35 (68.6)

[50.7–83.1]

Senegal baseline

1613

216 (13.4)

[11.8–15.2]

38 (2.4)

[1.7–3.2]d

29 (1.8)

[1.2–2.6]

24/216 (11.1)

[7.3–16.1]

24/29 (82.8)

[64.2–94.2]

4/38 (10.5)

[2.9–24.8]

4/29 (13.8)

[3.9–31.7]

24/240 (10.0)

[6.5–14.5]

24/29 (82.8)

[64.2–94.2]

Gambia FU

1171

202 (17.3)

[15.1–19.5]

8 (0.7)

[0.3–1.3]e

45 (3.8)

[2.8–5.1]

29/202 (14.4)

[9.8–20.0]

29/45 (64.4) [48.8–78.1]

3/8 (37.5)

[8.5–75.5]

3/45 (6.7)

[1.4–18.3]

29/207 (14.0)

[9.6–19.5]

29/45 (64.4)

[48.8–78.1]

Senegal FU

1771

135 (7.6)

[6.4–9.0]

18 (1.0)

[0.6–1.6]f

64 (3.6)

[2.8–4.6]

39/135 (28.9)

[21.4–37.3]

39/64 (60.9)

[47.9–72.9]

6/18 (33.3)

[13.3–59.0]

6/64 (9.4)

[3.5–19.3]

39/142 (27.5)

[20.3–35.6]

39/64 (60.9)

[47.9–72.9]

  1. a95% confidence interval
  2. bOne-sided, 97.5% confidence interval
  3. cBoth children also had TF
  4. d14 of these children also had TF
  5. eThree of these children also had TF
  6. f11 of these children also had TF