Distribution of 356 adults with community-acquired pneumonia by infection classification
| Infection classification | N | % |
|---|---|---|
| Negative cases | 124 | 34.8 |
| Only bacteria* | 92 | 25.8 |
| Only viruses* | 80 | 22.5 |
| Mixed† | 60 | 16.9 |
Santiago, Chile, February 2005–December 2007.
*One or more agents per case.
†Mixed virus and bacteria, with one or more agents per case.