Table 1.
Demographic and clinical characteristics of the 15,152 patients investigated by the Institut Pasteurs du Laos arbovirus surveillance system between 2012 and 2019.
| All Samples (n = 15,152) | Dengue Positive a (n = 8771) | Sample Serotyped (DENV-1 to DENV-4) (n = 3616) | DENV-4 (n = 1187) | |
|---|---|---|---|---|
| Mean age (SD) | 23.5 (15.7) n = 15,062 | 23.9 (14.4) n = 8718 | 24.5 (14.5) n = 3589 | 27.4 (14.6) n = 1181 |
| Sex | ||||
| Female (%) | 6197 (40.9) | 3775 (43.0) | 1526 (42.3) | 620 (52.2) |
| Male (%) | 5945 (39.2) | 3243 (39.3) | 1403 (38.8) | 557 (46.9) |
| Unknown (%) † | 3010 (19.9) | 1550 (17.7) | 682 (18.9) | 10 (0.8) |
| Mean number of days of fever (SD) | 3.8 (2.4) | 3.6 (1.8) | 3.4 (1.8) | 3.6 (1.7) |
| Clinical diagnosis b | ||||
| DF (%) | 11,910 (78.6) | 7036 (80.2) | 2868 (79.4) | 1154 (97.2) |
| DHF (%) | 213 (1.4) | 168 (1.9) | 49 (1.4) | 13 (1.1) |
| DSS (%) | 27 (0.2) | 23 (0.3) | 17 (0.5) | 9 (0.8) |
| Unknown (%) † | 3002 (19.8) | 1541 (17.6) | 677 (18.8) | 11 (0.9) |
Note: a Dengue-positive: RT-PCR and or NS1-positive. b Data concerning clinical diagnosis were collected from 2015 onwards. DF: Dengue fever, DHF: Dengue hemorrhagic fever, DSS: Dengue shock syndrome. † No clinical data.