541
Participants
Start Date
December 31, 2013
Primary Completion Date
April 30, 2015
Study Completion Date
April 30, 2015
A nasal swab
A nasal swab was performed by a research assistant and influenza virus infection was confirmed by enzyme-linked immunosorbent assay and reverse transcription-polymerase chain reaction on viral cultures
Centre Hospitalier Universitaire - Saint Etienne, Saint-Etienne
Hospices Civils de Lyon - Hôpital Edouard Herriot, Lyon
Hospices Civils de Lyon
OTHER