| respiratory syncytial virus groups a and b in porto alegre, brazil, from 1990 to 1995 and 1998. | we analyzed the respiratory syncytial virus (rsv) groups and their epidemiological pattern that were detected over the course of seven years in southern brazil. the two rsv groups co-circulated each year, but frequencies of groups a and b varied both between and within yearly outbreaks. in 1991, group a predominated over group b (p=0.0016). rsv outbreaks analyzed showed a temperature-dependent pattern and no association with rainfall, similarly to other countries from southern south america. kno ... | 2001 | 11285489 |
| respiratory viruses in the pediatric intensive care unit: prevalence and clinical aspects. | a survey was conducted in two pediatric intensive care units in hospitals in porto alegre, brazil, in order to monitor the main respiratory viruses present in bronchiolitis and/or pneumonia and their involvement in the severity of viral respiratory infections. viral respiratory infection prevalence was 38.7%. in bronchiolitis, respiratory syncytial virus (rsv) was detected in 36% of the cases. in pneumonia, the prevalence rates were similar for adenovirus (10.3%) and rsv (7.7%). there was a diff ... | 2004 | 15761607 |