Table 1 Demographic characteristics of study participants
Participants | DENV seropositivea n (%) | DENV seronegative n (%) | Total n (%) |
|---|---|---|---|
Total number | 28 (7.8) | 330 (92.2) | 358 (100) |
 Male | 11 (8.1) | 125 (91.9) | 136 (38.0) |
 Female | 17 (7.7) | 205 (92.3) | 222 (62.0) |
Median age (years) | 57.5 | 49 | 49 |
 10–19 | 0 (0) | 19 (100) | 19 (5.3) |
 20–29 | 3 (7.9) | 35 (92.1) | 38 (10.6) |
 30–39 | 3 (4.8) | 59 (95.2) | 62 (17.3) |
 40–49 | 6 (9.8) | 55 (90.2) | 61 (17.0) |
 50–59 | 3 (4.2) | 68 (95.8) | 71 (19.9) |
 60+ | 13 (12.1) | 94 (87.9) | 107 (29.9) |
Travel historyb | 9 (7.9) | 105 (92.1) | 114 (31.8) |
No travel historyb | 19 (7.8) | 225 (92.2) | 244 (68.2) |
YFV vaccination | 3 (9.7) | 28 (90.3) | 31 (8.7) |
No YFV vaccination | 25 (7.6) | 302 (92.4) | 327 (91.3) |
Funchal | 20 (8.7) | 209 (91.3) | 229 (64.0) |
Câmara de Lobos | 1 (4.5) | 21 (95.5) | 22 (6.1) |
Santa Cruz | 3 (6.1) | 46 (93.9) | 49 (13.7) |
Sao Vicente | 1 (16.7) | 5 (83.3) | 6 (1.7) |
Porto Moniz | 1 (50) | 1 (50) | 2 (0.6) |
Machico | 0 (0) | 8 (100) | 8 (2.2) |
Ribeira Brava | 0 (0) | 8 (100) | 8 (2.2) |
Calheta | 0 (0) | 6 (100) | 6 (1.7) |
Santana | 0 (0) | 4 (100) | 4 (1.1) |
Ponta do Sol | 0 (0) | 4 (100) | 4 (1.1) |
Porto Santo | 0 (0) | 2 (100) | 2 (0.6) |
Missing data | 2 (11.1) | 16 (88.8) | 18 (5.0) |