Viral respiratory infection was diagnosed by PCR from combined pharyngeal and nasopharyngeal swabs introduced into UTM tubes and transported to the laboratory. RNA extraction was by the easyMAG® system (BioMérieux, Marcy-l'Étoile, France). RSV was diagnosed by the Simplexa™ Flu A/B & RSV kit (DiaSorin) or the Seeplex® RV7 kit (Seegene).
All positive cultures (blood, sputum, urine and others) from the first seven days of hospitalization were extracted for identification of bacterial or fungal super-infections. The list was reviewed independently by two internal medicine physicians to exclude positive cultures that were considered to be contaminants.
All positive cultures (blood, sputum, urine and others) from the first seven days of hospitalization were extracted for identification of bacterial or fungal super-infections. The list was reviewed independently by two internal medicine physicians to exclude positive cultures that were considered to be contaminants.