Volume 27, Number 1—January 2021
Research
Estimating the Force of Infection for Dengue Virus Using Repeated Serosurveys, Ouagadougou, Burkina Faso
Table 1
Characteristics | All participants,† N = 2,897 | Seropositive,‡ n = 1,920 | Seronegative,‡ n = 977 | p value§ |
---|---|---|---|---|
Mean age, SD |
22.32 (13.92) |
27.02 (13.36) |
13.08 (9.74) |
<0.001 |
Age group, y | <0.001 | |||
1–4 | 208 (7.2) | 37 (1.9) | 171 (17.5) | |
5–9 | 410 (14.2) | 142 (7.4) | 268 (27.4) | |
10–14 | 384 (13.3) | 189 (9.8) | 195 (20.0) | |
15–19 | 379 (13.1) | 243 (12.7) | 136 (13.9) | |
20–29 | 694 (24.0) | 560 (29.2) | 134 (13.7) | |
30–39 | 410 (14.2) | 357 (18.6) | 53 (5.4) | |
40–49 | 264 (9.1) | 249 (13.0) | 15 (1.5) | |
50–55 |
148 (5.1) |
143 (7.5) |
5 (0.5) |
|
Sex¶ | ||||
M | 1,154 (39.9) | 700 (36.5) | 454 (46.5) | <0.001 |
F |
1,741 (60.1) |
1,218 (63.5) |
523 (53.5) |
|
Ethnicity | 0.712 | |||
Burkinabé | 2,871 (99.6) | 1,906 (99.6) | 965 (99.5) | |
Others |
13 (0.5) |
8 (0.4) |
5 (0.5) |
|
Neighborhood/sector | <0.001 | |||
Sector 22 | 447 (18.2) | 342 (20.5) | 105 (13.3) | |
Sector 25 | 510 (20.7) | 395 (23.6) | 115 (14.6) | |
Juvenat fille | 517 (21.0) | 353 (21.1) | 164 (20.8) | |
Pazani | 433 (17.6) | 281 (16.8) | 152 (19.2) | |
Zongo | 547 (22.2) | 297 (17.8) | 250 (31.7) | |
Nioko |
8 (0.3) |
4 (0.2) |
4 (0.5) |
|
Occupation | <0.001 | |||
Student | 1,033 (35.8) | 586 (30.6) | 447 (46.0) | |
Housewife | 885 (30.7) | 666 (34.8) | 219 (22.5) | |
Small business owner | 163 (5.7) | 130 (6.8) | 33 (3.4) | |
Unskilled worker | 153 (5.3) | 124 (6.5) | 29 (3.0) | |
Government official | 92 (3.2) | 77 (4.0) | 15 (1.5) | |
Private sector employee | 82 (2.8) | 66 (3.5) | 16 (1.7) | |
Merchant | 55 (1.9) | 46 (2.4) | 9 (0.9) | |
Retired | 53 (1.8) | 26 (1.4) | 27 (2.8) | |
Farmer | 49 (1.7) | 35 (1.8) | 14 (1.4) | |
Skilled worker | 43 (1.5) | 32 (1.7) | 11 (1.1) | |
Service sector worker |
43 (1.5) |
34 (1.8) |
9 (0.9) |
|
Education level | <0.001 | |||
Illiterate | 887 (30.7) | 596 (31.1) | 291 (29.9) | |
Literate, no education | 72 (2.5) | 58 (3.0) | 14 (1.4) | |
1–6 y of school | 803 (27,8) | 455 (23.8) | 348 (35.8) | |
7–10 y of school | 551 (19.1) | 388 (20.3) | 163 (16.8) | |
11–13 y of school | 274 (9.5) | 200 (10.4) | 74 (7.6) | |
>University | 210 (7.5) | 171 (8.9) | 39 (3.0) | |
Others# |
57 (2.0) |
39 (2.0) |
18 (1.9) |
|
Self-reported preexisting conditions | ||||
Cardiovascular | 113 (4.0) | 100 (5.3) | 13 (1.4) | <0.001 |
Diabetes | 10 (0.4) | 7 (0.4) | 3 (0.3) | 0.817 |
Lung disease | 19 (0.7) | 17 (0.9) | 2 (0.2) | 0.034 |
Cerebrovascular | 27 (0.9) | 18 (0.9) | 9 (0.9) | 0.990 |
Musculoskeletal | 101 (3.5) | 82 (4.3) | 19 (2.0) | 0.002 |
Gastrointestinal | 193 (6.7) | 148 (7.8) | 45 (4.7) | 0.002 |
Anemia | 10 (0.4) | 2 (0.1) | 8 (0.80) | 0.002 |
Others |
108 (3.8) |
79 (4.1) |
29 (3.0) |
0.139 |
Self-reported previous dengue | <0.001 | |||
Yes | 13 (0.5) | 13 (0.7) | 0 | |
No | 2,421 (84.7) | 1,635 (86.0) | 786 (82.1) | |
Unknown | 426 (14.9) | 254 (13.4) | 172 (18.0) |
*Values are no. (%) except as indicated. †Total participants enrolled at serosurvey 1. ‡Results of IgG indirect ELISA among participants at serosurvey 1. §p values based on χ2 test. ¶2 individuals with missing information on sex. #Religious and other informal education.
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Page updated: December 21, 2020
Page reviewed: December 21, 2020
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