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Article: Institutional risk factors for norovirus outbreaks in Hong Kong elderly homes: A retrospective cohort study
Title | Institutional risk factors for norovirus outbreaks in Hong Kong elderly homes: A retrospective cohort study |
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Authors | |
Issue Date | 2011 |
Citation | BMC Public Health, 2011, v. 11, article no. 297 How to Cite? |
Abstract | Background: Most of the institutional outbreaks of norovirus in Hong Kong occur in elderly homes, the proportion being 69% in 2006. Residents in elderly homes are a special population seriously affected by norovirus infections, it is necessary to investigate the risk factors of the norovirus outbreaks in Hong Kong elderly homes at the facility level. Methods. A cohort of 748 elderly homes was followed up from January 2005 to December 2007; each elderly home was treated as one observation unit and the outcome event was the norovirus outbreak. Cox regression models were fitted to estimate the rate ratio (RR) and 95% confidence interval (CI) for the potential risk factors. Results: A total of 276 norovirus outbreaks were confirmed during the study period; the outbreak rate was 12.2 (95% CI: 9.9-14.6) per 100 home-years; elderly homes with a larger capacity (RR = 1.4, 95% CI: 1.3-1.5 (per 30-resident increment)), a higher staff-to-resident ratio (RR = 1.2, 95% CI: 1.1-1.3 (per 1/30 increment) and better wheelchair accessibility (RR = 2.0, 95% CI: 1.3-3.2) were found to have an elevated norovirus outbreak rate in Hong Kong elderly homes; Elderly homes with partitions between beds had a lower rate of norovirus outbreaks (RR = 0.6, 95% CI: 0.4-0.8). Conclusions: Elderly home capacity, staff-to-resident ratio and wheelchair accessibility were risk factors for norovirus outbreaks in Hong Kong elderly homes. Partitions between beds were a protective factor of norovirus outbreaks. These results should be considered in the infection control in Hong Kong elderly homes. © 2011 Lin et al; licensee BioMed Central Ltd. |
Persistent Identifier | http://hdl.handle.net/10722/207024 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lin, Hualiang | - |
dc.contributor.author | Ng, Sammy | - |
dc.contributor.author | Chan, Shelley | - |
dc.contributor.author | Chan, Waiman | - |
dc.contributor.author | Lee, Krystal Chi Kei | - |
dc.contributor.author | Ho, Suzanne | - |
dc.contributor.author | Tian, Linwei | - |
dc.date.accessioned | 2014-12-09T04:31:16Z | - |
dc.date.available | 2014-12-09T04:31:16Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | BMC Public Health, 2011, v. 11, article no. 297 | - |
dc.identifier.uri | http://hdl.handle.net/10722/207024 | - |
dc.description.abstract | Background: Most of the institutional outbreaks of norovirus in Hong Kong occur in elderly homes, the proportion being 69% in 2006. Residents in elderly homes are a special population seriously affected by norovirus infections, it is necessary to investigate the risk factors of the norovirus outbreaks in Hong Kong elderly homes at the facility level. Methods. A cohort of 748 elderly homes was followed up from January 2005 to December 2007; each elderly home was treated as one observation unit and the outcome event was the norovirus outbreak. Cox regression models were fitted to estimate the rate ratio (RR) and 95% confidence interval (CI) for the potential risk factors. Results: A total of 276 norovirus outbreaks were confirmed during the study period; the outbreak rate was 12.2 (95% CI: 9.9-14.6) per 100 home-years; elderly homes with a larger capacity (RR = 1.4, 95% CI: 1.3-1.5 (per 30-resident increment)), a higher staff-to-resident ratio (RR = 1.2, 95% CI: 1.1-1.3 (per 1/30 increment) and better wheelchair accessibility (RR = 2.0, 95% CI: 1.3-3.2) were found to have an elevated norovirus outbreak rate in Hong Kong elderly homes; Elderly homes with partitions between beds had a lower rate of norovirus outbreaks (RR = 0.6, 95% CI: 0.4-0.8). Conclusions: Elderly home capacity, staff-to-resident ratio and wheelchair accessibility were risk factors for norovirus outbreaks in Hong Kong elderly homes. Partitions between beds were a protective factor of norovirus outbreaks. These results should be considered in the infection control in Hong Kong elderly homes. © 2011 Lin et al; licensee BioMed Central Ltd. | - |
dc.language | eng | - |
dc.relation.ispartof | BMC Public Health | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | Institutional risk factors for norovirus outbreaks in Hong Kong elderly homes: A retrospective cohort study | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1186/1471-2458-11-297 | - |
dc.identifier.pmid | 21569308 | - |
dc.identifier.pmcid | PMC3103461 | - |
dc.identifier.scopus | eid_2-s2.0-79955767471 | - |
dc.identifier.volume | 11 | - |
dc.identifier.spage | article no. 297 | - |
dc.identifier.epage | article no. 297 | - |
dc.identifier.eissn | 1471-2458 | - |
dc.identifier.isi | WOS:000291050200001 | - |
dc.identifier.issnl | 1471-2458 | - |