Table 1.
Results of an epidemiological and demographic descriptive study of confirmed cases of hantavirus in Brazil between 1993 and 2013
| Epidemiological and demographic variable | Number of cases | Deaths | Case fatality rate | Incidence rate | |
|---|---|---|---|---|---|
| n | % | n | % | /100,000 | |
| Region of probable infection site | |||||
| North | 95 | 3.5 | 40 | 42.1 | 0.34 |
| Northeast | 11 | 0.4 | 5 | 45.4 | <0.01 |
| Southeast | 423 | 14.2 | 194 | 45.8 | 0.05 |
| South | 574 | 19.3 | 192 | 33.4 | 0.25 |
| Midwest | 472 | 15.9 | 184 | 38.9 | 0.90 |
| Left blank or unknown | 177 | 10.3 | 63 | 34.4 | – |
| Infection zone | |||||
| Urban | 151 | 8.6 | 60 | 39.7 | – |
| Rural | 1261 | 72.0 | 460 | 36.5 | – |
| Periurban | 110 | 6.3 | 48 | 42.7 | – |
| Left blank or unknown | 230 | 13.1 | 108 | 51.3 | – |
| Gender | |||||
| Male | 1338 | 76.4 | 503 | 37.6 | 0.04 |
| Female | 414 | 23.6 | 173 | 41.6 | <0.01 |
| Left blank | 0 | 0.0 | 0 | 0.0 | <0.01 |
| Ethnic group | |||||
| White | 1047 | 59.8 | 368 | 35.1 | – |
| Black | 91 | 5.2 | 40 | 44.0 | – |
| Asian | 18 | 1.0 | 4 | 22.2 | – |
| Mixed race | 363 | 20.7 | 165 | 45.5 | – |
| Indigenous | 38 | 2.2 | 3 | 7.9 | – |
| Left blank | 195 | 11.1 | 96 | 49.2 | – |
| Age | |||||
| Less than 1 year | 7 | 0.4 | 4 | 57.14 | 0.01 |
| 1–4 years | 6 | 0.3 | 1 | 16.7 | <0.01 |
| 5–9 years | 20 | 1.1 | 7 | 35.0 | 0.01 |
| 10–14 years | 43 | 2.5 | 16 | 37.2 | 0.02 |
| 15–19 years | 91 | 5.2 | 58 | 63.7 | 0.03 |
| 20–34 years | 426 | 24.3 | 282 | 66.2 | 0.04 |
| 35–49 years | 662 | 37.8 | 205 | 31.0 | 0.09 |
| 50–64 years | 363 | 20.7 | 92 | 25.3 | 0.09 |
| 65+ | 134 | 7.6 | 11 | 8.2 | 0.05 |