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Hønge BL, Hansen KS, Thomsen MK, Østergaard L, Mogensen TH, Storgaard M, Erikstrup C, Sørup S. Validation of ICD-10 diagnostic coding for influenza in the Danish National Patient Registry. Ann Epidemiol 2025; 102:62-67. [PMID: 39793861 DOI: 10.1016/j.annepidem.2024.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2024] [Revised: 12/28/2024] [Accepted: 12/31/2024] [Indexed: 01/13/2025]
Abstract
BACKGROUND The accuracy of recorded diagnosis codes for hospital admissions due to influenza in the Danish national registries is uncertain. We evaluated positive predictive value (PPV) and sensitivity of ICD-10 codes for influenza by comparing to the reference standard of influenza test results. METHODS Hospital admissions were assessed in the Danish National Patient Registry (DNPR), and influenza test results in the Danish Microbiology Database (MiBa). First, we report the proportion of positive influenza virus tests within seven days of admission among hospital admissions with a discharge influenza ICD-10 code (PPV). Second, we report the proportion with ICD-10 codes for influenza among patients with an admission registered with seven days of a positive influenza virus test (sensitivity). RESULTS From January 2012 - November 2022 a total of 18,761 admissions were registered with one of the 22 influenza ICD-10 codes in DNPR. Overall, there was a positive influenza test in 16,754 of the admissions (87.9 % = overall PPV, 95 % CI: 87.4-88.3). The PPV was highest for older patient groups (93.7 % in patients >80 years vs. 78.0 % in patients < 11 years), and for admissions that occurred in recent years (95.8 % in 2022 vs. 52.4 % in 2012). Among 33,834 hospitals admissions with a positive influenza test, less than half (n = 16,421, 48.5 % = sensitivity (95 % CI: 48.0 - 49.1 %)) were registered with an influenza ICD-10 code. CONCLUSIONS ICD-10 diagnoses codes have relatively high positive predictive value, but the sensitivity is low. Furthermore, the PPV depend on age and calendar year. WHAT IS NEW
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Affiliation(s)
- Bo Langhoff Hønge
- . Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark; . Department of Clinical Immunology, Aarhus University Hospital, Aarhus, Denmark.
| | | | | | - Lars Østergaard
- . Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark
| | - Trine Hyrup Mogensen
- . Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark; . Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Merete Storgaard
- . Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark
| | - Christian Erikstrup
- . Department of Clinical Immunology, Aarhus University Hospital, Aarhus, Denmark; . Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Signe Sørup
- . Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
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Ekezie W, Awwad S, Krauchenberg A, Karara N, Dembiński Ł, Grossman Z, del Torso S, Dornbusch HJ, Neves A, Copley S, Mazur A, Hadjipanayis A, Grechukha Y, Nohynek H, Damnjanović K, Lazić M, Papaevangelou V, Lapii F, Stein-Zamir C, Rath B, for the ImmuHubs Consortium. Access to Vaccination among Disadvantaged, Isolated and Difficult-to-Reach Communities in the WHO European Region: A Systematic Review. Vaccines (Basel) 2022; 10:1038. [PMID: 35891201 PMCID: PMC9324407 DOI: 10.3390/vaccines10071038] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/30/2022] [Accepted: 06/14/2022] [Indexed: 01/27/2023] Open
Abstract
Vaccination has a significant impact on morbidity and mortality. High vaccination coverage rates are required to achieve herd protection against vaccine-preventable diseases. However, limited vaccine access and hesitancy among specific communities represent significant obstacles to this goal. This review provides an overview of critical factors associated with vaccination among disadvantaged groups in World Health Organisation European countries. Initial searches yielded 18,109 publications from four databases, and 104 studies from 19 out of 53 countries reporting 22 vaccine-preventable diseases were included. Nine groups representing the populations of interest were identified, and most of the studies focused on asylum seekers, refugees, migrants and deprived communities. Recall of previous vaccinations received was poor, and serology was conducted in some cases to confirm protection for those who received prior vaccinations. Vaccination coverage was lower among study populations compared to the general population or national average. Factors that influenced uptake, which presented differently at different population levels, included health service accessibility, language and vaccine literacy, including risk perception, disease severity and vaccination benefits. Strategies that could be implemented in vaccination policy and programs were also identified. Overall, interventions specific to target communities are vital to improving uptake. More innovative strategies need to be deployed to improve vaccination coverage among disadvantaged groups.
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Affiliation(s)
- Winifred Ekezie
- Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany; (W.E.); (S.A.)
- Department of Epidemiology and Public Health, University of Nottingham, Nottingham NG5 1PB, UK
- College of Life Sciences, University of Leicester, Leicester LE5 4PW, UK
- ImmuHubs Consortium, Coordinating Entity: Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany;
| | - Samy Awwad
- Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany; (W.E.); (S.A.)
- ImmuHubs Consortium, Coordinating Entity: Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany;
- Stanford University, Palo Alto, CA 94305, USA
| | - Arja Krauchenberg
- ImmuHubs Consortium, Coordinating Entity: Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany;
- European Parents Association, 1000 Brussels, Belgium
| | - Nora Karara
- Young European Academy of Paediatrics, 1000 Brussels, Belgium;
- Evangelical Hospital Queen Elisabeth Herzberge, 10365 Berlin, Germany
| | - Łukasz Dembiński
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
- Department of Pediatric Gastroenterology and Nutrition, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Zachi Grossman
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
- Adelson School of Medicine, Ariel University, Ariel 40700, Israel
| | - Stefano del Torso
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Hans Juergen Dornbusch
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Ana Neves
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Sian Copley
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Artur Mazur
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Adamos Hadjipanayis
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Yevgenii Grechukha
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Hanna Nohynek
- Finnish Institute for Health and Welfare, FI-00271 Helsinki, Finland;
| | - Kaja Damnjanović
- Faculty of Philosophy, University of Belgrade, 11000 Beograd, Serbia;
| | - Milica Lazić
- Faculty of Philosophy, University of Novi Sad, 21000 Novi Sad, Serbia;
| | - Vana Papaevangelou
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | - Fedir Lapii
- European Academy of Paediatrics, 1000 Brussels, Belgium; (Ł.D.); (Z.G.); (S.d.T.); (H.J.D.); (A.N.); (S.C.); (A.M.); (A.H.); (Y.G.); (V.P.); (F.L.)
| | | | - Barbara Rath
- Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany; (W.E.); (S.A.)
- Department of Epidemiology and Public Health, University of Nottingham, Nottingham NG5 1PB, UK
- ImmuHubs Consortium, Coordinating Entity: Vienna Vaccine Safety Initiative e.V., 10437 Berlin, Germany;
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Eiset AH, Stensvold CR, Fuursted K, Nielsen HV, Wejse C. High prevalence of methicillin-resistant Staphylococcus aureus, Giardia, and Blastocystis in asymptomatic Syrian asylum seekers in Denmark during 2016 through 2018. J Migr Health 2021; 1-2:100016. [PMID: 34405169 PMCID: PMC8352168 DOI: 10.1016/j.jmh.2020.100016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/02/2020] [Accepted: 12/02/2020] [Indexed: 11/30/2022] Open
Abstract
High prevalence of intestinal parasite colonisation; all were asymptomatic. High prevalence of MRSA; low prevalence of ESBL and CPO. Recommend attention to antimicrobial resistance when attending to Syrian refugees. Recommend no routine screening for parasites in asymptomatic adult Syrian refugees.
Introduction Concerns have been raised regarding the emergence of antimicrobial-resistance and parasitic infections in the European refugee population. Here, we estimated the prevalence of intestinal parasites and selected antimicrobial-resistant bacteria in newly arrived asylum seekers in Denmark. Materials and methods Using a cross-sectional one-stage cluster sample design, adult Syrian asylum seekers were included upon arrival in Denmark. Faecal samples were collected and tested for ova and parasites, extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-E) and carbapenemase-producing organisms (CPO). Throat swabs were collected and analysed for methicillin-resistant Staphylococcus aureus (MRSA) and Corynebacterium diphtheriae. Results We invited 121 eligible individuals (20% of the source population) from six different asylum centres to participate, of whom 113 agreed. Throat swabs and faecal samples were received from 104 and 48 participants, respectively. Seven individuals did not provide enough material for the entire panel of faecal analyses. Three individuals (7.3%, 95%CI: 2.5–19.4%) were colonised with Giardia intestinalis and 28 (68.3%, 95%CI: 53.0–80.4%) with Blastocystis sp. (subtypes 1 [n = 5], 2 [n = 9] and 3 [n = 14]). Seven individuals (6.7%, 95%CI: 3.3–13.3%) were colonised with MRSA and one with ESBL-E. None had CPO or Corynebacterium diphtheriae and none reported any gastro-intestinal symptoms. Discussion Even with the most conservative estimates, the prevalence of Giardia intestinalis, Blastocystis sp. and MRSA was high in this asymptomatic refugee population. Conclusions We highlight the importance of raised awareness of antimicrobial-resistant bacteria when attending to newly arrived Syrian refugees. Meanwhile, our data suggest that routine screening for intestinal parasites in this population is of limited clinical relevance.
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Affiliation(s)
- Andreas Halgreen Eiset
- Center for Global Health (GloHAU), Department of Public Health, Aarhus University, Bartholins Allé 2, 8000 Aarhus C, Denmark
| | - Christen Rune Stensvold
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen S, Denmark
| | - Kurt Fuursted
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen S, Denmark
| | - Henrik Vedel Nielsen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen S, Denmark
| | - Christian Wejse
- Center for Global Health (GloHAU), Department of Public Health, Aarhus University, Bartholins Allé 2, 8000 Aarhus C, Denmark
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