Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study
Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background populatio...
Ausführliche Beschreibung
Autor*in: |
Christian Erikstrup [verfasserIn] Anna Damkjær Laksafoss [verfasserIn] Josephine Gladov [verfasserIn] Kathrine Agergård Kaspersen [verfasserIn] Susan Mikkelsen [verfasserIn] Lotte Hindhede [verfasserIn] Jens Kjærgaard Boldsen [verfasserIn] Signe Winther Jørgensen [verfasserIn] Steen Ethelberg [verfasserIn] Dorte Kinggaard Holm [verfasserIn] Mie Topholm Bruun [verfasserIn] Janna Nissen [verfasserIn] Michael Schwinn [verfasserIn] Thorsten Brodersen [verfasserIn] Christina Mikkelsen [verfasserIn] Susanne Gjørup Sækmose [verfasserIn] Erik Sørensen [verfasserIn] Lene Holm Harritshøj [verfasserIn] Bitten Aagaard [verfasserIn] Khoa Manh Dinh [verfasserIn] Michael P. Busch [verfasserIn] Charlotte Sværke Jørgensen [verfasserIn] Tyra Grove Krause [verfasserIn] Henrik Ullum [verfasserIn] Sisse Rye Ostrowski [verfasserIn] Laura Espenhain [verfasserIn] Ole Birger Vesterager Pedersen [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2022 |
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In: The Lancet Regional Health. Europe - Elsevier, 2021, 21(2022), Seite 100479- |
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Übergeordnetes Werk: |
volume:21 ; year:2022 ; pages:100479- |
Links: |
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DOI / URN: |
10.1016/j.lanepe.2022.100479 |
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Katalog-ID: |
DOAJ079006469 |
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520 | |a Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. | ||
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10.1016/j.lanepe.2022.100479 doi (DE-627)DOAJ079006469 (DE-599)DOAJ191aeb94d35846b3b9091b85386f5cfd DE-627 ger DE-627 rakwb eng RA1-1270 Christian Erikstrup verfasserin aut Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. SARS-CoV-2 Seroprevalence Infection fatality rate Public aspects of medicine Anna Damkjær Laksafoss verfasserin aut Josephine Gladov verfasserin aut Kathrine Agergård Kaspersen verfasserin aut Susan Mikkelsen verfasserin aut Lotte Hindhede verfasserin aut Jens Kjærgaard Boldsen verfasserin aut Signe Winther Jørgensen verfasserin aut Steen Ethelberg verfasserin aut Dorte Kinggaard Holm verfasserin aut Mie Topholm Bruun verfasserin aut Janna Nissen verfasserin aut Michael Schwinn verfasserin aut Thorsten Brodersen verfasserin aut Christina Mikkelsen verfasserin aut Susanne Gjørup Sækmose verfasserin aut Erik Sørensen verfasserin aut Lene Holm Harritshøj verfasserin aut Bitten Aagaard verfasserin aut Khoa Manh Dinh verfasserin aut Michael P. Busch verfasserin aut Charlotte Sværke Jørgensen verfasserin aut Tyra Grove Krause verfasserin aut Henrik Ullum verfasserin aut Sisse Rye Ostrowski verfasserin aut Laura Espenhain verfasserin aut Ole Birger Vesterager Pedersen verfasserin aut In The Lancet Regional Health. Europe Elsevier, 2021 21(2022), Seite 100479- (DE-627)1750524406 26667762 nnns volume:21 year:2022 pages:100479- https://doi.org/10.1016/j.lanepe.2022.100479 kostenfrei https://doaj.org/article/191aeb94d35846b3b9091b85386f5cfd kostenfrei http://www.sciencedirect.com/science/article/pii/S2666776222001752 kostenfrei https://doaj.org/toc/2666-7762 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 21 2022 100479- |
spelling |
10.1016/j.lanepe.2022.100479 doi (DE-627)DOAJ079006469 (DE-599)DOAJ191aeb94d35846b3b9091b85386f5cfd DE-627 ger DE-627 rakwb eng RA1-1270 Christian Erikstrup verfasserin aut Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. SARS-CoV-2 Seroprevalence Infection fatality rate Public aspects of medicine Anna Damkjær Laksafoss verfasserin aut Josephine Gladov verfasserin aut Kathrine Agergård Kaspersen verfasserin aut Susan Mikkelsen verfasserin aut Lotte Hindhede verfasserin aut Jens Kjærgaard Boldsen verfasserin aut Signe Winther Jørgensen verfasserin aut Steen Ethelberg verfasserin aut Dorte Kinggaard Holm verfasserin aut Mie Topholm Bruun verfasserin aut Janna Nissen verfasserin aut Michael Schwinn verfasserin aut Thorsten Brodersen verfasserin aut Christina Mikkelsen verfasserin aut Susanne Gjørup Sækmose verfasserin aut Erik Sørensen verfasserin aut Lene Holm Harritshøj verfasserin aut Bitten Aagaard verfasserin aut Khoa Manh Dinh verfasserin aut Michael P. Busch verfasserin aut Charlotte Sværke Jørgensen verfasserin aut Tyra Grove Krause verfasserin aut Henrik Ullum verfasserin aut Sisse Rye Ostrowski verfasserin aut Laura Espenhain verfasserin aut Ole Birger Vesterager Pedersen verfasserin aut In The Lancet Regional Health. Europe Elsevier, 2021 21(2022), Seite 100479- (DE-627)1750524406 26667762 nnns volume:21 year:2022 pages:100479- https://doi.org/10.1016/j.lanepe.2022.100479 kostenfrei https://doaj.org/article/191aeb94d35846b3b9091b85386f5cfd kostenfrei http://www.sciencedirect.com/science/article/pii/S2666776222001752 kostenfrei https://doaj.org/toc/2666-7762 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 21 2022 100479- |
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10.1016/j.lanepe.2022.100479 doi (DE-627)DOAJ079006469 (DE-599)DOAJ191aeb94d35846b3b9091b85386f5cfd DE-627 ger DE-627 rakwb eng RA1-1270 Christian Erikstrup verfasserin aut Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. SARS-CoV-2 Seroprevalence Infection fatality rate Public aspects of medicine Anna Damkjær Laksafoss verfasserin aut Josephine Gladov verfasserin aut Kathrine Agergård Kaspersen verfasserin aut Susan Mikkelsen verfasserin aut Lotte Hindhede verfasserin aut Jens Kjærgaard Boldsen verfasserin aut Signe Winther Jørgensen verfasserin aut Steen Ethelberg verfasserin aut Dorte Kinggaard Holm verfasserin aut Mie Topholm Bruun verfasserin aut Janna Nissen verfasserin aut Michael Schwinn verfasserin aut Thorsten Brodersen verfasserin aut Christina Mikkelsen verfasserin aut Susanne Gjørup Sækmose verfasserin aut Erik Sørensen verfasserin aut Lene Holm Harritshøj verfasserin aut Bitten Aagaard verfasserin aut Khoa Manh Dinh verfasserin aut Michael P. Busch verfasserin aut Charlotte Sværke Jørgensen verfasserin aut Tyra Grove Krause verfasserin aut Henrik Ullum verfasserin aut Sisse Rye Ostrowski verfasserin aut Laura Espenhain verfasserin aut Ole Birger Vesterager Pedersen verfasserin aut In The Lancet Regional Health. Europe Elsevier, 2021 21(2022), Seite 100479- (DE-627)1750524406 26667762 nnns volume:21 year:2022 pages:100479- https://doi.org/10.1016/j.lanepe.2022.100479 kostenfrei https://doaj.org/article/191aeb94d35846b3b9091b85386f5cfd kostenfrei http://www.sciencedirect.com/science/article/pii/S2666776222001752 kostenfrei https://doaj.org/toc/2666-7762 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 21 2022 100479- |
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10.1016/j.lanepe.2022.100479 doi (DE-627)DOAJ079006469 (DE-599)DOAJ191aeb94d35846b3b9091b85386f5cfd DE-627 ger DE-627 rakwb eng RA1-1270 Christian Erikstrup verfasserin aut Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. SARS-CoV-2 Seroprevalence Infection fatality rate Public aspects of medicine Anna Damkjær Laksafoss verfasserin aut Josephine Gladov verfasserin aut Kathrine Agergård Kaspersen verfasserin aut Susan Mikkelsen verfasserin aut Lotte Hindhede verfasserin aut Jens Kjærgaard Boldsen verfasserin aut Signe Winther Jørgensen verfasserin aut Steen Ethelberg verfasserin aut Dorte Kinggaard Holm verfasserin aut Mie Topholm Bruun verfasserin aut Janna Nissen verfasserin aut Michael Schwinn verfasserin aut Thorsten Brodersen verfasserin aut Christina Mikkelsen verfasserin aut Susanne Gjørup Sækmose verfasserin aut Erik Sørensen verfasserin aut Lene Holm Harritshøj verfasserin aut Bitten Aagaard verfasserin aut Khoa Manh Dinh verfasserin aut Michael P. Busch verfasserin aut Charlotte Sværke Jørgensen verfasserin aut Tyra Grove Krause verfasserin aut Henrik Ullum verfasserin aut Sisse Rye Ostrowski verfasserin aut Laura Espenhain verfasserin aut Ole Birger Vesterager Pedersen verfasserin aut In The Lancet Regional Health. Europe Elsevier, 2021 21(2022), Seite 100479- (DE-627)1750524406 26667762 nnns volume:21 year:2022 pages:100479- https://doi.org/10.1016/j.lanepe.2022.100479 kostenfrei https://doaj.org/article/191aeb94d35846b3b9091b85386f5cfd kostenfrei http://www.sciencedirect.com/science/article/pii/S2666776222001752 kostenfrei https://doaj.org/toc/2666-7762 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 21 2022 100479- |
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10.1016/j.lanepe.2022.100479 doi (DE-627)DOAJ079006469 (DE-599)DOAJ191aeb94d35846b3b9091b85386f5cfd DE-627 ger DE-627 rakwb eng RA1-1270 Christian Erikstrup verfasserin aut Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. SARS-CoV-2 Seroprevalence Infection fatality rate Public aspects of medicine Anna Damkjær Laksafoss verfasserin aut Josephine Gladov verfasserin aut Kathrine Agergård Kaspersen verfasserin aut Susan Mikkelsen verfasserin aut Lotte Hindhede verfasserin aut Jens Kjærgaard Boldsen verfasserin aut Signe Winther Jørgensen verfasserin aut Steen Ethelberg verfasserin aut Dorte Kinggaard Holm verfasserin aut Mie Topholm Bruun verfasserin aut Janna Nissen verfasserin aut Michael Schwinn verfasserin aut Thorsten Brodersen verfasserin aut Christina Mikkelsen verfasserin aut Susanne Gjørup Sækmose verfasserin aut Erik Sørensen verfasserin aut Lene Holm Harritshøj verfasserin aut Bitten Aagaard verfasserin aut Khoa Manh Dinh verfasserin aut Michael P. Busch verfasserin aut Charlotte Sværke Jørgensen verfasserin aut Tyra Grove Krause verfasserin aut Henrik Ullum verfasserin aut Sisse Rye Ostrowski verfasserin aut Laura Espenhain verfasserin aut Ole Birger Vesterager Pedersen verfasserin aut In The Lancet Regional Health. Europe Elsevier, 2021 21(2022), Seite 100479- (DE-627)1750524406 26667762 nnns volume:21 year:2022 pages:100479- https://doi.org/10.1016/j.lanepe.2022.100479 kostenfrei https://doaj.org/article/191aeb94d35846b3b9091b85386f5cfd kostenfrei http://www.sciencedirect.com/science/article/pii/S2666776222001752 kostenfrei https://doaj.org/toc/2666-7762 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 21 2022 100479- |
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Christian Erikstrup @@aut@@ Anna Damkjær Laksafoss @@aut@@ Josephine Gladov @@aut@@ Kathrine Agergård Kaspersen @@aut@@ Susan Mikkelsen @@aut@@ Lotte Hindhede @@aut@@ Jens Kjærgaard Boldsen @@aut@@ Signe Winther Jørgensen @@aut@@ Steen Ethelberg @@aut@@ Dorte Kinggaard Holm @@aut@@ Mie Topholm Bruun @@aut@@ Janna Nissen @@aut@@ Michael Schwinn @@aut@@ Thorsten Brodersen @@aut@@ Christina Mikkelsen @@aut@@ Susanne Gjørup Sækmose @@aut@@ Erik Sørensen @@aut@@ Lene Holm Harritshøj @@aut@@ Bitten Aagaard @@aut@@ Khoa Manh Dinh @@aut@@ Michael P. Busch @@aut@@ Charlotte Sværke Jørgensen @@aut@@ Tyra Grove Krause @@aut@@ Henrik Ullum @@aut@@ Sisse Rye Ostrowski @@aut@@ Laura Espenhain @@aut@@ Ole Birger Vesterager Pedersen @@aut@@ |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000naa a22002652 4500</leader><controlfield tag="001">DOAJ079006469</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230307012531.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">230307s2022 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.lanepe.2022.100479</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)DOAJ079006469</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)DOAJ191aeb94d35846b3b9091b85386f5cfd</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">RA1-1270</subfield></datafield><datafield tag="100" ind1="0" ind2=" "><subfield code="a">Christian Erikstrup</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2022</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. 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Christian Erikstrup misc RA1-1270 misc SARS-CoV-2 misc Seroprevalence misc Infection fatality rate misc Public aspects of medicine Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study |
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RA1-1270 Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study SARS-CoV-2 Seroprevalence Infection fatality rate |
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Christian Erikstrup Anna Damkjær Laksafoss Josephine Gladov Kathrine Agergård Kaspersen Susan Mikkelsen Lotte Hindhede Jens Kjærgaard Boldsen Signe Winther Jørgensen Steen Ethelberg Dorte Kinggaard Holm Mie Topholm Bruun Janna Nissen Michael Schwinn Thorsten Brodersen Christina Mikkelsen Susanne Gjørup Sækmose Erik Sørensen Lene Holm Harritshøj Bitten Aagaard Khoa Manh Dinh Michael P. Busch Charlotte Sværke Jørgensen Tyra Grove Krause Henrik Ullum Sisse Rye Ostrowski Laura Espenhain Ole Birger Vesterager Pedersen |
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seroprevalence and infection fatality rate of the sars-cov-2 omicron variant in denmark: a nationwide serosurveillance study |
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Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study |
abstract |
Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. |
abstractGer |
Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. |
abstract_unstemmed |
Summary: Background: Introduction of the Omicron variant caused a steep rise in SARS-CoV-2 infections despite high vaccination coverage in the Danish population. We used blood donor serosurveillance to estimate the percentage of recently infected residents in the similarly aged background population with no known comorbidity. Methods: To detect SARS-CoV-2 antibodies induced due to recent infection, and not vaccination, we assessed anti-nucleocapsid (anti-N) immunoglobulin G (IgG) in blood donor samples. Individual level data on SARS-CoV-2 RT-PCR results and vaccination status were available. Anti-N IgG was measured fortnightly from January 18 to April 3, 2022. Samples from November 2021 were analysed to assess seroprevalence before introduction of the Omicron variant in Denmark. Findings: A total of 43 088 donations from 35 309 Danish blood donors aged 17–72 years were screened. In November 2021, 1·2% (103/8 701) of donors had detectable anti-N IgG antibodies. Adjusting for test sensitivity (estimates ranging from 74%–81%) and November seroprevalence, we estimate that 66% (95% confidence intervals (CI): 63%–70%) of the healthy, similarly aged Danish population had been infected between November 1, 2021, and March 15, 2022. One third of infections were not captured by SARS-CoV-2 RT-PCR testing. The infection fatality rate (IFR) was 6·2 (CI: 5·1–7·5) per 100 000 infections. Interpretation: Screening for anti-N IgG and linkage to national registers allowed us to detect recent infections and accurately assess assay sensitivity in vaccinated or previously infected individuals during the Omicron outbreak. The IFR was lower than during previous waves. Funding: The Danish Ministry of Health. |
collection_details |
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title_short |
Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study |
url |
https://doi.org/10.1016/j.lanepe.2022.100479 https://doaj.org/article/191aeb94d35846b3b9091b85386f5cfd http://www.sciencedirect.com/science/article/pii/S2666776222001752 https://doaj.org/toc/2666-7762 |
remote_bool |
true |
author2 |
Anna Damkjær Laksafoss Josephine Gladov Kathrine Agergård Kaspersen Susan Mikkelsen Lotte Hindhede Jens Kjærgaard Boldsen Signe Winther Jørgensen Steen Ethelberg Dorte Kinggaard Holm Mie Topholm Bruun Janna Nissen Michael Schwinn Thorsten Brodersen Christina Mikkelsen Susanne Gjørup Sækmose Erik Sørensen Lene Holm Harritshøj Bitten Aagaard Khoa Manh Dinh Michael P. Busch Charlotte Sværke Jørgensen Tyra Grove Krause Henrik Ullum Sisse Rye Ostrowski Laura Espenhain Ole Birger Vesterager Pedersen |
author2Str |
Anna Damkjær Laksafoss Josephine Gladov Kathrine Agergård Kaspersen Susan Mikkelsen Lotte Hindhede Jens Kjærgaard Boldsen Signe Winther Jørgensen Steen Ethelberg Dorte Kinggaard Holm Mie Topholm Bruun Janna Nissen Michael Schwinn Thorsten Brodersen Christina Mikkelsen Susanne Gjørup Sækmose Erik Sørensen Lene Holm Harritshøj Bitten Aagaard Khoa Manh Dinh Michael P. Busch Charlotte Sværke Jørgensen Tyra Grove Krause Henrik Ullum Sisse Rye Ostrowski Laura Espenhain Ole Birger Vesterager Pedersen |
ppnlink |
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RA - Public Medicine |
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doi_str |
10.1016/j.lanepe.2022.100479 |
callnumber-a |
RA1-1270 |
up_date |
2024-07-03T21:09:54.319Z |
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|
score |
7.3999996 |