Table 1. Demographic and epidemiological characteristics of dengue-infected patients (N = 3,322).
| Year | 2007 | 2008 | 2009 | 2010 | 2011 | 2007–2011 |
|---|---|---|---|---|---|---|
| Variables | ||||||
| Gender | ||||||
| Female | 66(43.1) | 149(43.7) | 345(54.2) | 551(54.6) | 592(50.0) | 1,703(51.3) |
| Male | 87(56.9) | 192(56.3) | 291(45.8) | 458(45.4) | 591(50.0) | 1,619(48.7) |
| Age groups | ||||||
| 0–20 | 22(14.4) | 53(15.5) | 69(10.8) | 139(13.8) | 142(12.0) | 425(12.8) |
| 21–50 | 72(47.0) | 151(44.3) | 269(42.3) | 452(44.8) | 533(45.1) | 1,477(44.5) |
| 51–70 | 46(30.1) | 118(34.6) | 256(40.3) | 344(34.1) | 413(34.9) | 1,177(35.4) |
| > 70 | 13(8.5) | 19(5.6) | 42(6.6) | 74(7.3) | 95(8.0) | 243(7.3) |
| Case source | ||||||
| Autochthonous | 141(92.2) | 326(95.6) | 623(98.0) | 990(98.1) | 1,168(98.7) | 3,248(97.8) |
| Imported | 12(7.8) | 15(4.4) | 13(2.0) | 19(1.9) | 15(1.3) | 74(2.2) |
| Disease type | ||||||
| DFa | 153(100.0) | 339(99.4) | 627(98.6) | 1,003(99.4) | 1164(98.4) | 3,286(98.9) |
| DHFb | 0(0.0) | 2(0.6) | 9(1.4) | 6(0.6) | 19(1.6) | 36(1.1) |
| Viral serotypec | ||||||
| DENV-1 | 50(35.5) | 138(42.3) | 0(0.0) | 4(0.4) | 2(0.2) | 194(6.0) |
| DENV-2 | 0(0.0) | 7(2.2) | 1(0.2) | 169(17.0) | 661(56.6) | 838(25.8) |
| DENV-3 | 0(0.0) | 0(0.0) | 280(44.9) | 322(32.6) | 47(4.0) | 649(20.0) |
| DENV-4 | 0(0.0) | 1(0.3) | 0(0.0) | 6(0.6) | 0(0.0) | 7(0.2) |
| NDSd | 91(64.5) | 180(55.2) | 342(54.9) | 489(49.4) | 458(39.2) | 1,560(48.0) |
| Infected twice | 1(0.7) | 14(4.3) | 44(7.1) | 54(5.5) | 63(5.4) | 176(5.4) |
| Notification at the first visite | ||||||
| Yes | 18(11.8) | 36(10.6) | 103(16.2) | 260(25.8) | 243(20.5) | 660(19.9) |
| No | 135(88.2) | 305(89.4) | 533(83.8) | 749(74.2) | 940(79.5) | 2,662(80.1) |
| Medical institute to notify dengue cases | ||||||
| Local health center | 51(33.3) | 105(30.8) | 218(34.3) | 237(23.5) | 178(15.0) | 789(23.8) |
| Clinics | 14(9.2) | 29(8.5) | 31(4.9) | 243(24.1) | 284(24.0) | 601(18.1) |
| Community hospital | 3(1.9) | 51(15.0) | 94(14.8) | 80(7.9) | 92(7.8) | 320(9.6) |
| Metropolitan hospital | 35(22.9) | 71(20.8) | 184(28.9) | 215(21.3) | 291(24.6) | 796(24.0) |
| Academic medical center | 45(29.4) | 83(24.3) | 101(15.9) | 230(22.8) | 332(28.1) | 791(23.8) |
| Airport screening | 5(3.3) | 2(0.6) | 8(1.2) | 4(0.4) | 6(0.5) | 25(0.7) |
Data is shown as n(%).
aDF: dengue fever.
bDHF: dengue hemorrhagic fever.
cVirus serotype for autochthonous cases (n = 3,248).
dNDS: non-differential serotype
eThe number of dengue cases was or wasn’t reported to National Infectious Diseases Notification Surveillance System (NIDNSS) at Centers for Disease Control, Taiwan at the first visit to a doctor.