title: Influenza A outbreak in a community hospital.
abstract: In January 2005, the Department of Public Health, HSE Eastern Region, received notification of an outbreak of influenza-like illness (ILI) in a community hospital for elderly patients. Influenza A (H3N2 subtype) was isolated in 12 of 18 (66%) throat swabs sent to the National Virus Reference Laboratory (NVRL). An outbreak control team was convened. Infection control measures were put in place. Immunisation clinics were organised for non-immunised staff. The epidemic curve confirmed peak onset of illness from 14th-17th January. Attack rates were high among patients (37/74: 50%). Mortalities were also reported. A high percentage of cases occurred in patients who had been immunised (19/34: 55.6%). Seventeen of 94 healthcare workers (HCWs) became ill (18.1%), of whom only 3 (3.2%) had been immunised. A questionnaire circulated to staff identified reasons for non-immunisation. In accordance with the National Institute of Clinical Excellence (NICE) guidelines and microbiological advice, antiviral medication was recommended for patients and non-immunised HCWs as treatment or chemoprophylaxis. This outbreak highlights the importance of immunisation of HCWs against influenza.
authors.affiliation: Dept of Public Health, HSE Eastern Region, Dr Steevens Hospital, Dublin.
authors.forename: M O
authors.initials: MO
authors.lastname: Meara
authors.forename: A O
authors.initials: AO
authors.lastname: Brien
authors.forename: E
authors.initials: E
authors.lastname: Feely
authors.forename: M
authors.initials: M
authors.lastname: Conlon
mesh_terms: D000368:Aged; D004196:Disease Outbreaks; D006764:Hospitals, Community; D006801:Humans; D017053:Infection Control; D053122:Influenza A Virus, H3N2 Subtype / Q000302:isolation & purification; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology*; D007494:Ireland; D014611:Vaccination / Q000706:statistics & numerical data
chemical_list: D007252:Influenza Vaccines