Table 1.
Number of recruited and seropositive individuals by age-group, sex and household size of the households they reside in.
| HH Size 1 sero+/N % (95% CI) | HH Size 2 sero+/N % (95% CI) | HH Size 3 sero+/N % (95% CI) | HH Size 4 sero+/N % (95% CI) | HH Size 5+sero+/N % (95% CI) | Overall sero+/N % (95% CI) | Odds ratio for being seropositive | |
|---|---|---|---|---|---|---|---|
| HOUSEHOLDS | |||||||
| 0 seropositive | 819/860 | 807/889 | 190/229 | 188/239 | 41/50 | 2045/2267 | – |
| 95% (94–96) | 91% (89–93) | 83% (78–87) | 79% (73–83) | 82% (69–90) | 90% (89–91) | ||
| 1 seropositive | 41/860 | 52/889 | 29/229 | 38/230 | 5/50 | 165/2267 | – |
| 5% (4–6) | 6% (4–8) | 13% (9–18) | 16% (12–21) | 10% (4–21) | 7% (6–8) | ||
| Over 1 seropositive | – | 30/889 | 10/229 | 13/239 | 4/50 | 57/2267 | – |
| 3% (2–5) | 4% (2–8) | 5% (3–9) | 8% (3–19) | 3% (2–3) | |||
| INDIVIDUALS | |||||||
| Age | |||||||
| 5–9 | – | 0/6 | 1/38 | 5/97 | 2/26 | 8/167 | 0.5 |
| 0% (0–39) | 3% (0–13) | 5% (2–12) | 8% (2–24) | 5% (2–9) | (0.2–1.0) | ||
| 10–19 | – | 2/21 | 8/99 | 14/248 | 7/91 | 31/459 | 0.7 |
| 10% (3–29) | 8% (4–15) | 6% (3–9) | 8% (4–15) | 7% (5–9) | (0.5–1.1) | ||
| 20–49 | 14/227 | 39/361 | 23/249 | 36/375 | 7/90 | 119 /1302 | Ref |
| 6% (4–10) | 11% (8–14) | 9% (6–13) | 10% (7–13) | 8% (4–15) | 9% (8–11) | ||
| 50–64 | 17/316 | 38/607 | 18/253 | 22/224 | 1/43 | 96/1443 | 0.7 |
| 5% (3–8) | 6% (5–8) | 7% (5–11) | 10% (7–14) | 2% (0–12) | 7% (5–8) | (0.5–0.9) | |
| 65+ | 10/317 | 33/783 | 1/48 | 0/12 | 0/3 | 44/1163 | 0.4 |
| 3% (2–6) | 4% (3–6) | 2% (0–11) | 0% (0–24) | 0% (0–56) | 4% (3–5) | (0.3–0.6) | |
| Sex | |||||||
| Female | 28/558 | 40/900 | 27/364 | 34/475 | 8/135 | 137/2432 | Ref |
| 5% (3–7) | 4% (3–6) | 7% (5–11) | 7% (5–10) | 6% (3–111) | 6% (5–7) | ||
| Male | 13/302 | 72/878 | 24/323 | 43/481 | 9/118 | 161/2102 | 1.4 |
| 4% (3–7) | 8% (7–10) | 7% (5–11) | 9% (7–12) | 8% (4–14) | 8% (7–9) | (1.1–1.8) | |
| Self-reported symptom | |||||||
| Asymptomatic or seronegative | 7/602 | 36/1277 | 19/449 | 24/643 | 5/176 | 91/3147 | Ref |
| 1% (1–2) | 3% (2–4) | 4% (3–7) | 4% (3–5) | 3% (1–6) | 3% (2–4) | ||
| Symptomatic | 34/258 | 76/501 | 32/238 | 53/313 | 12/77 | 207/1387 | 5.9 |
| 13% (10–18) | 15% (12–19) | 13% (10–18) | 17% (13–21) | 15% (9–25) | 15% (13–17) | (4.6–7.6) | |
| Reduced contacta | |||||||
| No | 8/71 | 1/70 | 5/37 | 3/39 | 0/7 | 17/224 | – |
| 11% (6–21) | 1% (0–8) | 14% (6–28) | 8% (3–20) | 0% (0–35) | 8% (5–12) | ||
| Yes | 33/788 | 107/1672 | 40/569 | 63/707 | 11/178 | 254/3914 | 0.8 |
| 4% (3–6) | 6% (5–8) | 7% (5–9) | 9% (7–11) | 6% (3–11) | 6% (6–7) | (0.5–1.5) | |
| Missing Response | 0/1 | 4/36 | 6/81 | 11/210 | 6/68 | 27/396 | – |
| 0% (0–95) | 11% (4–25) | 7% (3–15) | 5% (3–9) | 9% (4–18) | 7% (5–10) | ||
| Number of extra-HH contacts/weekb | |||||||
| 0 | 3/64 | 14/188 | 7/72 | 5/88 | 1/12 | 30/424 | 0.9 |
| 5% (2–13) | 7% (4–12) | 10% (5–19) | 6% (2–13) | 8% (0–35) | 7% (5–10) | (0.6–1.4) | |
| 1–2 | 10/207 | 26/375 | 7/134 | 15/180 | 2/49 | 60/945 | 0.8 |
| 5% (3–9) | 7% (5–10) | 5% (3–10) | 8% (5–13) | 4% (1–14) | 6% (5–8) | (0.5–1.2) | |
| 3–5 | 12/283 | 32/563 | 7/158 | 12/152 | 3/47 | 66/1203 | Ref |
| 4% (2–7) | 6% (4–8) | 4% (2–9) | 8% (5–13) | 6% (2–17) | 5% (4–7) | ||
| 6–10 | 10/115 | 22/266 | 8/86 | 12/132 | 1/26 | 53/625 | 1.2 |
| 9% (5–15) | 8% (6–12) | 9% (5–17) | 9% (5–15) | 4% (0–10) | 8% (7–11) | (0.8–2.0) | |
| Over 10 | 6/190 | 14/350 | 16/156 | 22/194 | 4/51 | 62/941 | 0.9 |
| 3% (1–7) | 4% (2–7) | 10% (6–16) | 11% (8–17) | 8% (3–18) | 7% (5–8) | (0.6–1.5) | |
| Missing Response | 0/1 | 4/36 | 6/81 | 11/210 | 6/68 | 27/396 | – |
| 0% (0–95) | 11% (4–25) | 7% (3–15) | 5% (3–9) | 9% (4–18) | 7% (5–8) | ||
| Overall | 41/860 | 112/1778 | 51/687 | 77/956 | 17/253 | 298/4534 | – |
| 5% (4–6) | 6% (5–8) | 7% (6–10) | 8% (6–10) | 7% (4–10) | 7% (6–7) |
aA self-assessment of whether the participants have reduced the number of people they meet since the start of the epidemic.
bAverage number of people participants meet outside of the people they lived with since the start of the epidemic.