Incidence of Influenza Virus Infection among Wroclaw’s Healthcare Workers in Pre-COVID-19 2019–2020 Influenza Season Using Novel Flu SensDx Device

Michał Jacek Jędrzejek, Agnieszka Mastalerz-Migas and Paulina Janicka
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Michał Jacek Jędrzejek: Department of Family Medicine, Wroclaw Medical University, W. Syrokomli 1, 51-141 Wroclaw, Poland
Agnieszka Mastalerz-Migas: Department of Family Medicine, Wroclaw Medical University, W. Syrokomli 1, 51-141 Wroclaw, Poland
Paulina Janicka: Department of Pathology, Wroclaw University of Environmental and Life Sciences, Norwida 31, 50-375 Wroclaw, Poland

IJERPH, 2022, vol. 19, issue 6, 1-13

Abstract: Background: Healthcare workers (HCWs) are more exposed to influenza infection, and the influenza vaccination is recommended each year, to reduce the risk of influenza infection and prevent influenza transmission. This study is a cross-sectional study and the objectives were to determine the rate of influenza virus infection among HCWs in the 2019–2020 influenza season. Methods: Between January and March 2020, a survey was carried out in 2 hospitals and 15 primary health-care settings (PHCS) in Wroclaw (Poland). The novel point-of-care testing Flu SensDx device was used, which detects the M1 protein of the influenza virus using electrochemical impedance spectroscopy from biological material (throat/nasal swabs). Results: A total of 150 samples were collected. The majority of participating HCWs by profession were 83 physicians (55.3%) and half (51.3%) of the participating HCWs worked in PHCS. Influenza vaccination coverage was 61.3% in 2019–2020 and 46.0% in the 2018–2019 season for all participants. Of the participating HCWs, 44.0% were positive tested by the Flu SensDx device. There were no statistically significant differences among the positive tested HCWs, their influenza immunization history, and the presence of symptoms of influenza-like illness ( p > 0.05). Conclusion: Although the results of the present study suggest that influenza vaccination does not reduce the frequency of influenza virus detection by Flu SensDx testing in the HCWs participants, larger studies are needed to estimate the incidence of influenza virus infection among HCWs to understand the underlying mechanism and fine-tune policies aimed at reducing nosocomial infections.

Keywords: influenza; vaccination; healthcare workers; point-of-care test; Flu SensDx (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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