About: Cochrane Review: Interventions for the interruption or reduction of the spread of respiratory viruses

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Cochrane Review: Interventions for the interruption or reduction of the spread of respiratory viruses
Creator	Jefferson, Tom Dooley, Liz Ferroni, Eliana Nair, Sreekumaran Del Mar, Chris Foxlee, Ruth Rivetti, Alessandro Hewak, Bill Prabhala, Adi
Source	Medline; PMC
abstract	BACKGROUND: Viral epidemics or pandemics such as of influenza or severe acute respiratory syndrome (SARS) pose a significant threat. Antiviral drugs and vaccination may not be adequate to prevent catastrophe in such an event. OBJECTIVES: To systematically review the evidence of effectiveness of interventions to interrupt or reduce the spread of respiratory viruses (excluding vaccines and antiviral drugs, which have been previously reviewed). SEARCH STRATEGY: We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2006, issue 4); MEDLINE (1966 to November 2006); OLDMEDLINE (1950 to 1965); EMBASE (1990 to November 2006); and CINAHL (1982 to November 2006). SELECTION CRITERIA: We scanned 2300 titles, excluded 2162 and retrieved the full papers of 138 trials, including 49 papers of 51 studies. The quality of three randomised controlled trials (RCTs) was poor; as were most cluster RCTs. The observational studies were of mixed quality. We were only able to meta‐analyse case‐control data. We searched for any interventions to prevent viral transmission of respiratory viruses (isolation, quarantine, social distancing, barriers, personal protection and hygiene). Study design included RCTs, cohort studies, case‐control studies, cross‐over studies, before‐after, and time series studies. DATA COLLECTION AND ANALYSIS: We scanned the titles, abstracts and full text articles using a standardised form to assess eligibility. RCTs were assessed according to randomisation method, allocation generation, concealment, blinding, and follow up. Non‐RCTs were assessed for the presence of potential confounders and classified as low, medium, and high risk of bias. MAIN RESULTS: The highest quality cluster RCTs suggest respiratory virus spread can be prevented by hygienic measures around younger children. Additional benefit from reduced transmission from children to other household members is broadly supported in results of other study designs, where the potential for confounding is greater. The six case‐control studies suggested that implementing barriers to transmission, isolation, and hygienic measures are effective at containing respiratory virus epidemics. We found limited evidence that the more uncomfortable and expensive N95 masks were superior to simple surgical masks. The incremental effect of adding virucidals or antiseptics to normal handwashing to decrease respiratory disease remains uncertain. The lack of proper evaluation of global measures such as screening at entry ports and social distancing prevent firm conclusions about these measures. AUTHORS' CONCLUSIONS: Many simple and probably low‐cost interventions would be useful for reducing the transmission of epidemic respiratory viruses. Routine long‐term implementation of some of the measures assessed might be difficult without the threat of a looming epidemic. PLAIN LANGUAGE SUMMARY: Interventions to interrupt or reduce the spread of respiratory viruses Although respiratory viruses usually only cause minor disease, they can cause epidemics. Approximately 10% to 15% of people worldwide contract influenza annually, with attack rates as high as 50% during major epidemics. Global pandemic viral infections have been devastating because of their wide spread. In 2003 the severe acute respiratory syndrome (SARS) epidemic affected ˜8,000 people, killed 780, and caused an enormous social and economic crisis. A new avian influenza pandemic caused by the H5N1 strain might be more catastrophic. Single measures (particularly the use of vaccines or antiviral drugs) may be insufficient to interrupt the spread. We found 51 studies including randomised controlled trials (RCTs) and observational studies with a mixed risk of bias. Respiratory virus spread might be prevented by hygienic measures around younger children. These might also reduce transmission from children to other household members. Implementing barriers to transmission, isolation, and hygienic measures may be effective at containing respiratory virus epidemics. There was limited evidence that (more uncomfortable and expensive) N95 masks were superior to simple ones. Adding virucidals or antiseptics to normal handwashing is of uncertain benefit. There is insufficient evaluation of global measures such as screening at entry ports and social distancing.
has issue date	2008-12-10(xsd:dateTime)
bibo:doi	10.1002/ebch.291
bibo:pmid	32313518
has license	no-cc
schema:url	https://doi.org/10.1002/ebch.291
resource representing a document's title	Cochrane Review: Interventions for the interruption or reduction of the spread of respiratory viruses
has PubMed Central identifier	PMC7163512
has PubMed identifier	32313518
schema:publication	Evid Based Child Health
resource representing a document's body	covid:PMC7163512#body_text
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