Table 1.
Association between the characteristics of the participants and anti-chikungunya virus IgG positivity.
| Variable | No. Tested (%) |
Anti-CHIKV IgG Positive n (%; 95% CI) |
cOR (95% CI) |
p Value |
|---|---|---|---|---|
| Overall | 1300 (100.0) | 37 (2.8; 2.0–3.9) | - | - |
| Sex Female Male |
691 (53.1) 609 (46.8) |
18 (2.6; 1.6–4.1) 19 (3.1; 1.9–4.8) |
1 1.2 (0.6–2.3) |
0.58 |
| Age (yr) 0–<20 20–<35 35–<50 ≥50 |
141 (10.8) 448 (34.5) 345 (26.5) 366 (28.1) |
3 (2.1; 0.4–6.1) 13 (2.9; 1.6–4.9) 6 (1.7; 0.6–3.8) 15 (4.1; 2.3–6.7) |
1 1.4 (0.4–4.9) 1.2 (0.3–5.0) 2.0 (0.6–6.9) |
0.62 0.77 0.29 |
| Residence Northern Nouakchott (NN) Teyarett Dar Naim Toujounin Total in NN Western Nouakchott (WN) Sebkha Tevragh Zeina Ksar Total in WN Southern Nouakchott (SN) Riadh Arafat El Mina Total in SN |
129 96 97 322 144 160 73 377 176 241 184 601 |
2 (1.6; 0.2–5.5) 3 (3.1; 0.7–8.9) 2 (2.1; 0.3–7.3) 7 (2.2; 2.0–7.5) 5 (3.5; 1.1–7.9) 2 (1.3; 0.2–4.4) 2 (2.7; 0.3–9.6) 9 (2.4; 0.7–8.9) 8 (4.5; 2.0–8.8) 10 (4.1; 2.0–7.5) 3 (1.6; 0.3–4.7) 21 (3.5; 0.3–4.7) |
1 1.1 (0.4–3.0) 1.6 (0.7–3.9) |
0.85 0.27 |
| Use of impregnated bed net No Yes |
1050 (80.7) 250 (19.2) |
31 (3.0; 2.0–4.2) 5 (2.4; 0.9–5.2) |
1 1.2 (0.6–2.3) |
0.64 |
| Sleeping under bed net Never Always |
758 (58.3) 542 (41.7) |
19 (2.5; 1.5–3.9) 18 (3.3; 2.0–5.2) |
1 0.8 (0.4–1.4) |
0.39 |
| Repellent use Never Always |
1073 (82.5) 227 (17.5) |
34 (3.2; 2.2–4.4) 3 (1.3; 0.3–3.8) |
1 0.4 (0.1–1.3) |
0.14 |
Abbreviations: n: number of anti-CHIKV IgG positive samples; 95% CI: 95% confidence interval; cOR: crude odds ratio.