Volume 12, Number 2—February 2006
Dispatch
Human Metapneumovirus, Peru
Table 1
Prevalence and OR of RT-PCR positivity for HMPV by risk factor*
| Risk factor | n | % RT-PCR–positive (95% CI) | OR (95% CI) |
|---|---|---|---|
| Age group (y)† | 0.9 (0.8–0.99) | ||
| <7 | 151 | 6 (2.8–11) | 7.2 (1–319.4) |
| 7–20 | 152 | 1.3 (0.2–4.7) | 1.5 (0.1–90.5) |
| >20 | 115 | 0.9 (0–4.8) | Reference |
| Unknown | 2 | ||
| Sex | |||
| Male | 154 | 4.6 (1.9–9.1) | 2.3 (0.5–14) |
| Female | 148 | 2 (0.4–5.8) | Reference |
| Unknown | 118 | ||
| Site | |||
| Peru | 388 | 2.8 (1.4–5) | Reference |
| Argentina | 32 | 3.1 (0.1–16.2) | 1.1 (0–8.1) |
| Season | |||
| Autumn‡ | 106 | 6.6 (2.7–13.1) | 4.3 (1.3–13.8) |
| Others | 307 | 1.6 (0.5–3.8) | Reference |
| Unknown | 7 | ||
*OR, odds ratio, RT-PCR, reverse transcription–polymerase chain reaction; HMPV, human metapneumovirus; CI, confidence interval.
†Age as a continuous variable.
‡Autumn in the Southern Hemisphere was considered to be from March 22 to June 21, per Centro de Divulgacao Cientifica e Cultural, São Paulo University, Brazil.


