... Principi N: Comparison of nasopharyngeal nylonflocked swabs with universal transport medium and rayon-bud swabswith a sponge reservoir of viral transport medium in the diagnosis of paediatric influenza. ... infection,by the p resence or absence of the H27 5Y mutatio n, andthe impact on the households of the infection on theirhouseholds No statistically significant differences werefound in terms of ... Maggiore Policlinico, Milan,Italy.2Pediatric Department, University of Padua, Padua, Italy.3Department of Biomedicine of Evolutive Age, University of Bari, Bari, Italy.4PediatricDepartment,...