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El comportamiento epidemiológico del virus influenza (FLU) en la comunidad se refleja en el hospital, es planteable que la actividad comunitaria de otros virus respiratorios también se traduzca en un alza de las internaciones por estos agentes. Objetivo: describir la presencia y características clínico-epidemiológicas de infecciones por virus respiratorios no-FLU (virus respiratorio sincicial-VRS, parainfluenza y adenovirus-ADV) entre adultos hospitalizados durante la temporada de influenza y establecer una comparación con virus influenza-A (IA) o -B (IB). Pacientes y Método: Adultos internados en Hospital Clínico Universidad Católica, de mayo a julio de 2004, con infección por IA o IB, y VRS, parainfluenza (1-2-3) o ADV demostrada por test rápido o inmunofluorescencia directa. Resultados: Se identificaron 86 casos: 73,5% FLU (48,2%, IA y 25,3% IB) y 26,5% no-FLU. (15,7% parainfluenza-2; 8,4% VRS, 1,2% parainfluenza-3 y 1,2% ADV). El grupo con FLU presentó más frecuentemente mialgias, tos, hospitalización por síndrome febril, mayores valores de PCR y porcentaje de baciliformes (p < 0,05). Conclusiones: Durante la temporada de influenza 2004, 26,5% de las infecciones entre adultos hospitalizados fueron causadas por virus no-FLU. La dificultad en diferenciar infecciones por virus FLU de no-FLU, plantea la necesidad de ampliar el estudio de la etiología viral incluso durante la temporada de FLU During yearly influenza (FLU) season, FLU viruses are well represented among hospitalized patients as in the community. Also, other respiratory viruses could be represented among adult in-patients. Aim: to describe the presence and clinical- epidemiological characteristics of non-FLU respiratory virus infections (respiratory syncytial-RSV, parainfluenza and adenovirus-ADV) among hospitalized adults during FLU season and to compare with FLU-A (IA) or -B (IB) cases. Patients and Methods: Adult patients hospitalized at Hospital Clínico Universidad Católica between May to July 2004 with a respiratory virus infections confirmed by rapid antigen test or direct immunofluorescence of IA, IB (Flu group) or RSV, parainfluenza (1-2-3) and ADV (non-Flu group) were included. Results: 86 cases were identified: 73.5% FLU (48.2% IA, 25.3% IB) and 26.5% non-FLU (15.7% parainfluenza-2; 8.4% RSV; 1.2% parainfluenza-3; 1.2% ADV). No differences were observed in general characteristics and evolution of patients. In FLU-group were more frequently observed myalgia, cough, hospitalization due to febrile syndrome, higher values of C-reactive protein and band leukocytes count (p < 0.05). Conclusions: During 2004 FLU season a 26.5 % of respiratory viral infection were due to non-FLU viruses among adult hospitalized in our centre. The difficulty to difference FLU vs. non-FLU infections, suggest that it is necessary to include other respiratory virus in the viral etiological diagnosis, even in FLU season |
