Clinical relevance of rhinovirus infections among adult hospitalized patients

Fica, Alberto; Dabanch, Jeannette; Andrade, Winston; Bustos, Patricia; Carvajal, Ita; Ceroni, Carolina; Triantafilo, Vjera; Castro, Marcelo; Fasce, Rodrigo

Human rhinovirus (HRV) is an emerging viral pathogen. AIM: To characterize a group of patients admitted due to infection by this agent in a general hospital in Chile. METHODS: Cases were identified by RT-PCR for 1 year through active surveillance of patients admitted with severe respiratory illness. Diagnosis was not available during hospitalization. Thirty-two cases were identified, 90% were ≥60 years old or had co-morbid conditions. Human rhinovirus-related admissions represented 23.7% of hospitalization due to severe acute respiratory infections among adults and ranked second to influenza (37.8%). Patients presented with pneumonia (68.8%), decompensated chronic lung conditions (21.9%), heart failure or influenza-like illness (6.3% each). Admission to intensive or intermediate care units was required by 31.2% and in-hospital mortality reached 12.5%. A CURB-65 score ≥3 was significantly associated to in-hospital mortality (p < 0.05). Most patients received antibiotics (90%). CONCLUSIONS: Human rhinovirus infections in elderly patients with co-morbid conditions are associated with hospitalizations, requiring critical or semi-critical antibiotics use. A high CURB-65 score was associated to in-hospital mortality.