Dataset Information

Five years of hospital based surveillance of influenza-like illness and influenza in a short-stay geriatric unit.

ABSTRACT:

Background

Data on influenza in the healthcare setting are often based on retrospective investigations of outbreaks and a few studies described influenza during several consecutive seasons.The aim of the present work is to report data on influenza like illness (ILI) and influenza from 5-year prospective surveillance in a short-stay geriatrics unit.

Findings

A short stay geriatrics unit underwent 5 years of ILI surveillance from November 2004 to March 2009, with the aim of describing ILI in a non-outbreak context. The study was proposed to patients who presented ILI, defined as fever >37.8°C or cough or sore throat. Among 1,353 admitted patients, 115 presented an ILI, and 34 had hospital-acquired ILI (HA-ILI). Influenza was confirmed in 23 patients, 13 of whom had been vaccinated. Overall attack rates were 2.78% and 0.02% for HA-ILI and HA-confirmed influenza respectively, during the 5 seasons.

Conclusions

This 5-year surveillance study supports the notion that influenza infections are common in hospitals, mostly impacting the elderly hospitalized in short-stay units. It highlights the need for appropriate control measures to prevent HA-ILI in geriatric units and protect elderly patients.

SUBMITTER: Regis C

PROVIDER: S-EPMC3943500 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature

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Publications

Five years of hospital based surveillance of influenza-like illness and influenza in a short-stay geriatric unit.

Régis Corinne C Voirin Nicolas N Escuret Vanessa V Kim Byeul-A BA Robert Olivier O Lina Bruno B Comte Brigitte B Vanhems Philippe P

BMC research notes 20140221

<h4>Background</h4>Data on influenza in the healthcare setting are often based on retrospective investigations of outbreaks and a few studies described influenza during several consecutive seasons.The aim of the present work is to report data on influenza like illness (ILI) and influenza from 5-year prospective surveillance in a short-stay geriatrics unit.<h4>Findings</h4>A short stay geriatrics unit underwent 5 years of ILI surveillance from November 2004 to March 2009, with the aim of describi ...[more]

PMID: 24555834

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Project description:BackgroundInfluenza-like illnesses (ILIs) and lower respiratory tract infections (LRTIs) cause substantial morbidity and mortality worldwide. The study assessed the health and economic burden of ILI and LRTI according to age and comorbidities, since available evidence is limited and heterogeneous.MethodThe prevalence of comorbidities, the seasonal incidence rates and the mean and per capita direct costs of ED accesses for ILI/LRTI, whether followed by hospitalization or not, recorded in adults aged ?50?years over the last 6 years, in the referral hospitals located in the Genoese metropolitan area (Liguria, Italy) where the syndromic surveillance system is active, were evaluated through a retrospective observational study. Comorbidities were estimated through the Chronic Condition Data Warehouse that integrates multiple Medicare data sources. A comparison with the administrative healthcare International Classification of Diseases-9th revision-Clinical Modification (ICD-9-CM)-based data was also conducted.ResultsThe prevalence of subjects with ?1 comorbidity ranged from 23.49 to 59.92%. The most prevalent all-age comorbidities were cardiovascular diseases and cancer. The overall ILI/LRTI incidence rate was 6.73/1000 person-years, almost double the value derived from routine data, and increased with age. The highest rates were observed in patients with renal failure and bronchopneumopathies. The mean cost of ED accesses/hospitalization for ILI/LRTI was €3353 and was almost twice as high in the ?85?years as in the youngest age-group. The highest mean costs were observed in patients with renal failure and cancer. The per capita costs increased from €4 to €71 with age, and were highest in patients with renal failure and bronchopneumopathy.ConclusionThe burden of ILIs/LRTIs in terms of ED accesses and hospitalizations in adults aged ?50?years is heavy, and is related to increasing age and, especially, to specific comorbidities. These results could contribute to revising age- and risk-based anti-influenza and -pneumococcus immunization strategies.

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Dataset Information

Five years of hospital based surveillance of influenza-like illness and influenza in a short-stay geriatric unit.

Background

Findings

Conclusions

Publications

Five years of hospital based surveillance of influenza-like illness and influenza in a short-stay geriatric unit.

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