Volume 25, Number 7—July 2019
Research
Asymptomatic Dengue Virus Infections, Cambodia, 2012–2013
Table 3
Univariate tests for associations between sociodemographic factors and infecting serotypes with asymptomatic dengue virus infections, Cambodia, 2012–2013*
Factor |
Asymptomatic, n = 26 |
Symptomatic, n = 320 |
p value† |
Sex | |||
M | 17 | 154 | 0.09 |
F |
9 |
166 |
|
Age, y | |||
0.5 to <1 | 0 | 9 (2.8) | 0.976 |
1–5 | 9 (34.6) | 99 (30.9) | |
6–10 | 9 (34.6) | 117 (36.6) | |
11–14 | 5 (19.2) | 66 (20.6) | |
15–30 | 3 (11.5) | 29 (9.1) | |
Mean
(+ SD, median) |
9.2
(+ 7.2, 8) |
11.0
(+ 7.1, 10) |
|
Relationship to index case-patient | |||
Neighbor | 17 (65.4) | 243 (76.0) | 0.004 |
Cousin | 5 (19.2) | 53 (16.6) | |
Sibling | 1 (3.9) | 22 (6.9) | |
Other |
3 (11.5) |
1 (0.3) |
|
Source of household income | |||
Planting crops | 14 (53.8) | 192 (60.0) | 0.812 |
Working in a factory | 3 (11.5) | 53 (16.6) | |
Shopkeeping | 5 (19.2) | 36 (11.3) | |
Fishing, farming, animal husbandry | 1 (3.9) | 17 (5.3) | |
Working in government | 0 | 6 (1.9) | |
Other or missing |
3 (11.5) |
16 (5.0) |
|
DENV serotype‡ | |||
DENV-1 | 21 (80.8) | 249 (79.1) | 0.892 |
DENV-2 | 2 (7.7) | 35 (11.1) | |
DENV-3 | 0 | 2 (0.6) | |
DENV-4 | 3 (11.5) | 28 (8.9) |
*Values are no. (%) patients except as indicated. DENV, dengue virus.
†By Fisher test or χ2 test.
‡Data for 5 symptomatic patients were missing, and another patient was excluded from analysis because of co-infection with DENV-1 and DENV-2.
1These authors contributed equally to this article.
2Current affiliation: GlaxoSmithKline Vaccines Research and Design, Singapore.