Incidence and characteristics of nosocomial influenza in a country with low vaccine coverage

Autor: Stéphane Jouneau, C. Grolhier, D. Luque-Paz, B. Bayeh, A. Le Bot, Charlotte Pronier, Pierre Tattevin, Vincent Thibault, François Bénézit
Přispěvatelé: Service des maladies infectieuses et réanimation médicale [Rennes] = Infectious Disease and Intensive Care [Rennes], CHU Pontchaillou [Rennes], Laboratoire de Virologie [Rennes] = Virology [Rennes], Service de pneumologie [Rennes] = Pneumology [Rennes], Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), ARN régulateurs bactériens et médecine (BRM), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Journal of Hospital Infection
Journal of Hospital Infection, WB Saunders, 2020, 105, pp.619-624. ⟨10.1016/j.jhin.2020.06.005⟩
Journal of Hospital Infection, 2020, 105 (4), pp.619-624. ⟨10.1016/j.jhin.2020.06.005⟩
ISSN: 0195-6701
1532-2939
DOI: 10.1016/j.jhin.2020.06.005⟩
Popis: Influenza vaccination coverage is low in France, in at-risk patients and in healthcare workers.We aimed to estimate the incidence of nosocomial influenza, its characteristics and outcome.During one influenza season, we retrospectively evaluated all cases of documented influenza. Inpatients with symptoms onset ≥48 h after admission were enrolled. Data were collected on a standardized questionnaire.From November 2017 to April 2018, 860 patients tested positive for influenza by polymerase chain reaction analysis on a respiratory sample. Among them, 204 (23.7%) were diagnosed ≥48 h after admission, of whom 57 (6.6% of all influenza cases) fulfilled inclusion criteria for nosocomial influenza: 26 women and 31 men, median age 82 years (interquartile range, 72.2-86.9). Twenty patients (38.6%) had recently (6 months) received the seasonal influenza vaccine. Median time between admission and symptoms onset, and between symptoms onset and diagnosis were, respectively, 11 days (7-19.5) and 29 h (15.5-48). Influenza was mostly acquired in a double-bedded room (N = 39, 68.4%), with documented exposure in 14 cases. Influenza B virus was more common in nosocomial (46/57, 80.7%), than in community-acquired cases (359/803, 44.6%), P0.001. Mortality rate at three months was 15.8% (N = 9). Incidence of nosocomial influenza was estimated at 0.22 per 1000 hospital-days during the study period.Nosocomial influenza is not rare in elderly inpatients, and may have severe consequences. Influenza B virus was over-represented, which suggests higher transmissibility and/or transmission clusters.
Databáze: OpenAIRE