A set of training materials for professionals working in intervention epidemiology, public health microbiology and infection control and hospital hygiene.
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Jean Claude Desenclos
The “Point prevalence survey of healthcare associated infections and antimicrobial use in European acute care hospitals” protocol adopts the following definition of Lower Respiratory Tract Infection other than pneumonia (LRI):
LRI-BRON: bronchitis, tracheobronchitis, bronchiolitis, tracheitis, without evidence of pneumonia.
Tracheobronchial infections must meet the following criteria:
patient has at least two of the following signs or symptoms with no other recognised cause: fever (> 38 °C), cough, new or increased sputum production, rhonchi, wheezing and at least one of the following:
A chronic bronchitis in a patient with chronic lung disease must not be reported as an healthcare associated infection , unless there is evidence of an acute secondary infection, manifested by change in organism.
LRI-LUNG: other infections of the lower respiratory tract.
Other infections of the lower respiratory tract must meet at least one of the following criteria:
A lung abscess or empyema without pneumonia must be reported as LRI-LUNG.
Link to European IC/HH Core Competencies
Area 3. Surveillance and investigation of healthcare associated infection (HAI)
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ecdc posted on 10/17/2012 3:43:34 PM:
OJE published "Case-control studies: basic concepts"
Abs: The purpose of this article is to present in elementary mathematical and statistical terms a simple way to quickly and effectively teach and understand case-control studies, as they are commonly done in dynamic populations-without using the rare disease assumption. Our focus is on case-control studies of disease incidence (‘incident case-control studies'); we will not consider the situation of case-control studies of prevalent disease, which are published much less frequently.
Ref: Jan P Vandenbroucke and Neil Pearce: Case-control studies: basic concepts Int. J. Epidemiol. (2012) 41(5): 1480-1489 doi:10.1093/ije/dys147 http://ije.oxfordjournals.org/content/41/5/1480.full.pdf+html
Arnold Bosman replied on 10/21/2012 1:22:41 PM:
Good reading !
The need to use case control in prevalent diseases occurs often. In that case we need to understand that 'the rare disease assumption' does not really exist, yet we need to think carefully about where we select our controls. The core principle is that we select controls because we want to measure 'how the exposure of interest is distributed in the population that gave rise to the cases.
On this topic, a very readable article appeared in Eurosurveillance. Olivier le Polain de Waroux and his co-authors do a great job describing and explaining the principles of case-cohort, with very useful examples.
I can invite everyone to read this piece:
Le Polain de Waroux O, Maguire H, Moren A. The case-cohort design in outbreak investigations. Euro Surveill. 2012;17(25):pii=20202. Available online: http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=20202
sbpmebxu replied on 7/29/2015 7:35:38 PM: 1
sbpmebxu replied on 7/29/2015 8:10:37 PM: 1
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