Volume 17, Number 1—January 2011
Letter
Change in Age Pattern of Persons with Dengue, Northeastern Brazil
Table
Confirmed cases of dengue fever and dengue hemorrhagic fever, Ceará, Brazil, 1998–2008*
Characteristic | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 |
---|---|---|---|---|---|---|---|---|---|---|---|
No. DF cases | 3,581 | 9,757 | 13,645 | 34,390 | 16,465 | 23,796 | 3,094 | 22,817 | 25,569 | 25,026 | 44,508 |
No. DHF cases |
4 |
3 |
4 |
82 |
72 |
292 |
14 |
199 |
173 |
280 |
408 |
Serotype of DENV isolated, % | |||||||||||
1 | – | – | – | 47.7 | 48.5 | 1.9 | 0 | 2.5 | 0 | 0 | 0 |
2 | – | – | – | 52.3 | 7.4 | 1.9 | 0 | 0.0 | 1.4 | 84.0 | 76.1 |
3 |
– |
– |
– |
0 |
44.1 |
96.2 |
100.0 |
97.5 |
98.6 |
16.0 |
23.9 |
Incidence of DF and DHF by age, y† | |||||||||||
<10 | 10.8 | 37.8 | 65.4 | 174.7 | 78.5 | 128.0 | 14.3 | 126.5 | 116.0 | 236.7 | 599.4 |
10–19 | 26.7 | 95.4 | 129.3 | 321.4 | 160.6 | 250.4 | 34.3 | 198.2 | 247.9 | 305.6 | 574.4 |
20–59 | 68.3 | 198.7 | 263.6 | 659.3 | 304.3 | 416.9 | 53.6 | 365.2 | 412.6 | 331.5 | 521.9 |
>60 |
143.1 |
210.0 |
194.8 |
423.4 |
223.3 |
313.0 |
39.1 |
441.5 |
422.2 |
249.9 |
301.0 |
Incidence of DHF by age, y† | |||||||||||
<10 | 0.000 | 0.000 | 0.000 | 0.236 | 0.114 | 1.423 | 0.068 | 1.011 | 0.890 | 4.884 | 8.992 |
10–19 | 0.062 | 0.000 | 0.059 | 0.796 | 0.449 | 3.601 | 0.065 | 2.512 | 1.771 | 3.261 | 4.968 |
20–59 | 0.064 | 0.094 | 0.058 | 1.361 | 1.474 | 4.655 | 0.318 | 3.074 | 3.053 | 3.387 | 4.358 |
>60 |
0.174 |
0.000 |
0.152 |
1.890 |
1.289 |
5.134 |
0.000 |
2.650 |
0.832 |
2.789 |
2.868 |
Hospitalizations for dengue (classic and hemorrhagic) by age, y‡ | |||||||||||
<10 | 0.008 | 0.014 | 0.015 | 0.050 | 0.145 | 0.352 | 0.073 | 0.395 | 0.266 | 0.667 | 1.449 |
10–19 | 0.006 | 0.010 | 0.020 | 0.131 | 0.255 | 0.632 | 0.156 | 0.646 | 0.497 | 0.750 | 1.128 |
20–59 | 0.005 | 0.011 | 0.024 | 0.256 | 0.440 | 0.847 | 0.255 | 0.804 | 0.572 | 0.710 | 0.786 |
>60 | 0.009 | 0.009 | 0.021 | 0.401 | 0.658 | 1.159 | 0.389 | 1.012 | 0.664 | 0.954 | 0.922 |
*Source: Hospitalization Information System, Notifiable Disease Information System, and Central Public Health Laboratory of Ceará. DF, dengue fever; DHF, dengue hemorrhagic fever, DENV, dengue virus; –, no information.
†Per 100,000 persons.
‡Per 1,000 persons.