ArticleInfluenza and other respiratory viruses2017
Hospital surveillance of influenza strains: a concordant image of viruses identified by the Swiss Sentinel system?
Article in Influenza and other respiratory viruses, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 3 citations in OpenAlex.
- System Complexity in Influenza Infection and Vaccination: Effects upon Excess Winter Mortality.Infectious disease reports · 2022Article
- Usefulness of Clinical Definitions of Influenza for Public Health Surveillance Purposes.Viruses · 2020Article
- Hospital surveillance of influenza strains: a concordant image of viruses identified by the Swiss Sentinel system?Influenza and other respiratory viruses · 2017Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe Swiss Sentinel system for influenza virus surveillance reports influenza-like illness in the community through a network of primary care practitioners, but the epidemiologic, demographic, and virological characterization may differ from that observed in hospitalized patients with influenza.
objectiveTo compare demographic and virological data from hospital influenza cases with Sentinel system data during the 2014-2015 season.
methodsWe included 2623 in- and outpatients with a screening request for influenza A/B in a university teaching hospital in Geneva, Switzerland, and 933 participants from the Swiss Sentinel surveillance system and compared the demographic and virological data of the two populations, including the respective distribution of influenza subtypes, and conducted a phylogenetic comparison at the HA1 level of influenza viruses recovered in community and hospital cases.
resultsThere were similar proportions of influenza strains recovered in the hospital and in the community (H3N2, 57.1% and 56.9%; H1N1pdm09, 15.5% and 14.2%; B, 27.4% and 28.8%, respectively). HA1 sequence analysis confirmed that all three strains were genetically similar between the two populations. During this particular season, influenza cases were detected earlier in the hospital than in the Sentinel system.
conclusionsAlthough an influenza surveillance system based on the community can predict the type of influenza strains that will be associated with hospitalizations, it fails to estimate the potential virulence of circulating strains. Further, the population characteristics in the community differ from those in hospitalized patients. This suggests that any national influenza surveillance system should include both community- and hospital-based surveys.
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