Volume 21, Number 8—August 2015
Synopsis
Underrecognition of Dengue during 2013 Epidemic in Luanda, Angola
Tyler M. Sharp
, Rosa Moreira, Maria José Soares, Lúis Miguel da Costa, Jennifer Mann, Mark J. Delorey, Elizabeth Hunsperger, Jorge L. Muñoz-Jordán, Candimar Colón, Harold S. Margolis, Adelaide de Caravalho, and Kay M. Tomashek
, Rosa Moreira, Maria José Soares, Lúis Miguel da Costa, Jennifer Mann, Mark J. Delorey, Elizabeth Hunsperger, Jorge L. Muñoz-Jordán, Candimar Colón, Harold S. Margolis, Adelaide de Caravalho, and Kay M. Tomashek
Table 2
Demographic, illness, behavioral, and household characteristics of participants with or without evidence of recent DENV infection that were identified though household cluster investigations, Luanda, Angola, 2013*
| Characteristic | Participants with evidence of recent DENV infection, N = 41 | Participants without evidence of recent DENV infection, N = 379 | p value |
|---|---|---|---|
| Demographic | |||
| Age, median (range) | 14 (4–65) | 24 (0–94) | 0.002 |
| Male sex, no (%) | 19 (49) | 157 (43) | 0.65 |
| Time in Luanda, y (range) | 13 (3–58) | 20 (0–80) | 0.01 |
| Medical history, no. (%) | |||
| Fever in past 30 d | 13 (33) | 109 (29) | 0.89 |
| Sought medical care | 7 (54) | 62 (57) | 0.42 |
| Hospitalized | 1 (14) | 6 (10) | 0.21 |
| Diagnosis of dengue | 0 (0) | 4 (6) | – |
| Diagnosis of malaria | 5 (71) | 36 (58) | 0.09 |
| Diagnosis of typhoid fever | 1 (14) | 4 (6) | – |
| Other†/unknown diagnosis | 1 (14) | 18 (29) | – |
| Minor bleeding‡ | 2 (15) | 6 (10) | 0.13 |
| Dengue with warning signs | 6 (46) | 23 (37) | 0.57 |
| Severe dengue | 1 (8) | 5 (8) | 0.86 |
| Behavioral, no. (%) | |||
| Traveled outside of Luanda in past 30 d | 0 (0) | 24 (6) | 0.07 |
| Used bed net in past 30 d | 2 (5) | 69 (19) | 0.05 |
| Used repellent in past 30 d | 2 (5) | 46 (12) | 0.03 |
| Household, no. (%) | |||
| Water supply | |||
| Piped water supply | 28 (76) | 186 (67) | 0.77 |
| Public water truck | 4 (11) | 84 (30) | 0.04 |
| Other§/unknown | 5 (14) | 59 (21) | 0.81 |
| Had febrile household member in past 30 d | 19 (56) | 176 (56) | 0.98 |
| Has screened windows | 1 (3) | 46 (15) | 0.14 |
| Usually leave windows open | 30 (79) | 258 (78) | 0.39 |
| Has air conditioning | 15 (39) | 142 (43) | 0.72 |
| Use mosquito coils in house or yard | 23 (62) | 176 (53) | 0.87 |
*Thirty-five participants with equivocal anti-DENV IgM ELISA results were excluded from analysis. DENV, dengue virus; –, insufficient numbers for permutation test. Boldface type indicates significance.
†Influenza, arterial hypertension, diabetes, abortion.
‡Petechiae, epistaxis, gingival bleed.
§Well, rain water.
Page created: July 14, 2015
Page updated: July 14, 2015
Page reviewed: July 14, 2015
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