1
|
von Schreeb S, Pedersen SK, Christensen H, Jørgsensen KM, Harritshøj LH, Hertz FB, Ahlström MG, Lebech AM, Lunding S, Nielsen LN, Gerstoft J, Kronborg G, Engsig FN. Questioning risk compensation: pre-exposure prophylaxis (PrEP) and sexually transmitted infections among men who have sex with men, capital region of Denmark, 2019 to 2022. Euro Surveill 2024; 29:2300451. [PMID: 38551099 PMCID: PMC10979528 DOI: 10.2807/1560-7917.es.2024.29.13.2300451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 12/20/2023] [Indexed: 04/01/2024] Open
Abstract
BackgroundPre-exposure prophylaxis (PrEP) effectively prevents HIV, but its association with sexually transmitted infections (STIs) has raised concerns about risk compensation, potentially impacting the expansion of PrEP programmes.AimWe examined the relationship between PrEP and the incidence of chlamydia, gonorrhoea and syphilis.MethodsIn this prospective cohort study, we compared STI rates before and after PrEP initiation among users in the capital region of Denmark (2019-2022), calculating incidence rate ratios adjusted for age and testing frequency (aIRR). To pinpoint when increases began, we plotted weekly STI rates, adjusting the timeline to correspond with PrEP initiation.ResultsThe study included 1,326 PrEP users with a median age of 35 years. The STI incidence rate per 100,000 person-years rose from 35.3 before to 81.2 after PrEP start, with an aIRR of 1.35 (95% CI: 1.18-1.56). Notably, this increase preceded PrEP initiation by 10-20 weeks. Specific aIRR for chlamydia, gonorrhoea and syphilis were 1.23 (95% CI: 1.03-1.48), 1.24 (95% CI: 1.04-1.47) and 1.15 (95% CI: 0.76-1.72), respectively. In subanalyses for anatomical sites aIRR was 1.26 (95% CI: 1.01-1.56) for rectal chlamydia and 0.66 (95% CI: 0.45-0.96) for genital gonorrhoea.ConclusionWe found a 35% increase in STI incidence associated with PrEP use. It started before PrEP initiation, challenging the assumption that PrEP leads to risk compensation. Instead, the data suggest that individuals seek PrEP during periods of heightened sexual risk-taking. Consequently, PrEP programmes should include sexual health consultations, STI testing, treatment and prevention strategies to prevent HIV and improve sexual health.
Collapse
Affiliation(s)
- Sebastian von Schreeb
- Department of Infectious Diseases, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
- Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark
| | - Susanne Kriegel Pedersen
- Department of Infectious Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Hanne Christensen
- Department of Infectious Diseases, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
| | | | - Lene Holm Harritshøj
- Department of Clinical Immunology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Frederik Boetius Hertz
- Department of Clinical Microbiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Magnus Glindvad Ahlström
- Department of Clinical Microbiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | - Anne-Mette Lebech
- Department of Infectious Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Suzanne Lunding
- Department of Internal Medicine, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | - Lars Nørregaard Nielsen
- Department of Pulmonary and Infectious Diseases, Copenhagen University Hospital - North Zealand Hospital, Copenhagen, Denmark
| | - Jan Gerstoft
- Department of Infectious Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Gitte Kronborg
- Department of Infectious Diseases, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Frederik N Engsig
- Department of Infectious Diseases, Copenhagen University Hospital - Amager and Hvidovre, Copenhagen, Denmark
| |
Collapse
|
2
|
Drechsler LØ, Boldsen JK, Hindhede L, Aagaard B, Harritshøj LH, Mikkelsen C, Brodersen T, Brøns N, Schwinn M, Hjalgrim H, Rostgaard K, Topholm Bruun M, Ostrowski SR, Pedersen OB, Mikkelsen S, Erikstrup C. The effect of ferritin-guided iron supplementation among Danish female first-time blood donors. Transfusion 2023; 63:1710-1718. [PMID: 37452554 DOI: 10.1111/trf.17484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 06/12/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND The identification of blood donors at risk of developing low hemoglobin (Hb) and subsequent intervention is expected to reduce donation-induced iron deficiency and low Hb among blood donors. This study explores the effects of ferritin-guided iron supplementation for female first-time donors implemented in four of five administrative regions in Denmark. STUDY DESIGN AND METHODS We included 45,919 female first-time donors in this study. Hb values were determined in donations of included donors during a 2-year follow-up period. For each region, an intervention group (after implementation) and a control group (before implementation) were defined. The primary outcome was Hb below the donation threshold (7.8 mmol/L ~ 12.5 g/dL) at the time of donation, in the control group, and the intervention group, using logistic regression. The secondary outcome was the number of donations per donor given during the follow-up period. RESULTS We observed a statistically significant decrease in the risk of female first-time donors experiencing a donation with low Hb after ferritin-guided iron supplementation was introduced: Odds ratio, 0.82; 95% confidence interval (CI), 0.71-0.95. We found a statistically significant increase in the number of donations per donor during the follow-up period after intervention; rate ratio: 1.05, 95% CI: 1.02-1.08. DISCUSSION Ferritin-guided iron supplementation led to a significant reduction in the occurrence of low hemoglobin (Hb) levels among Danish female first-time blood donors. The intervention was additionally associated with an increase in the number of donations per donor.
Collapse
Affiliation(s)
| | - Jens Kjaergaard Boldsen
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, Aarhus C, Denmark
| | - Lotte Hindhede
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark
| | - Bitten Aagaard
- Department of Clinical Immunology, Aalborg University Hospital, Aalborg, Denmark
| | - Lene Holm Harritshøj
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen Ø, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Christina Mikkelsen
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen Ø, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Copenhagen University, Copenhagen, Denmark
| | - Thorsten Brodersen
- Department of Clinical Immunology, Zealand University Hospital, Køge, Denmark
| | - Nanna Brøns
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen Ø, Denmark
| | - Michael Schwinn
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen Ø, Denmark
| | - Henrik Hjalgrim
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
- Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Haematology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Klaus Rostgaard
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
- Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Mie Topholm Bruun
- Department of Clinical Immunology, Odense University Hospital, Odense, Denmark
| | - Sisse Rye Ostrowski
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen Ø, Denmark
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Ole Birger Pedersen
- Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Immunology, Zealand University Hospital, Køge, Denmark
| | - Susan Mikkelsen
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark
| | - Christian Erikstrup
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, Aarhus C, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus C, Denmark
| |
Collapse
|
3
|
Erikstrup C, Laksafoss AD, Gladov J, Kaspersen KA, Mikkelsen S, Hindhede L, Boldsen JK, Jørgensen SW, Ethelberg S, Holm DK, Bruun MT, Nissen J, Schwinn M, Brodersen T, Mikkelsen C, Sækmose SG, Sørensen E, Harritshøj LH, Aagaard B, Dinh KM, Busch MP, Jørgensen CS, Krause TG, Ullum H, Ostrowski SR, Espenhain L, Pedersen OBV. Seroprevalence and infection fatality rate of the SARS-CoV-2 Omicron variant in Denmark: A nationwide serosurveillance study. Lancet Reg Health Eur 2022; 21:100479. [PMID: 35959415 PMCID: PMC9355516 DOI: 10.1016/j.lanepe.2022.100479] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
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.
Collapse
Affiliation(s)
- Christian Erikstrup
- Department of Clinical Immunology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, DK-8000 Aarhus C, Denmark
- Department of Clinical Medicine, Aarhus University, DK-8000 Aarhus C, Denmark
- Corresponding author at: Department of Clinical Immunology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark.
| | - Anna Damkjær Laksafoss
- Epidemiological Infectious Disease Preparedness, Statens Serum Institut, DK-2300 Copenhagen S, Denmark
| | - Josephine Gladov
- Department of Clinical Immunology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark
| | - Kathrine Agergård Kaspersen
- Department of Clinical Immunology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, DK-8000 Aarhus C, Denmark
| | - Susan Mikkelsen
- Department of Clinical Immunology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark
| | - Lotte Hindhede
- Department of Clinical Immunology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark
| | - Jens Kjærgaard Boldsen
- Department of Clinical Immunology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, DK-8000 Aarhus C, Denmark
| | | | - Steen Ethelberg
- Epidemiological Infectious Disease Preparedness, Statens Serum Institut, DK-2300 Copenhagen S, Denmark
| | - Dorte Kinggaard Holm
- Department of Clinical Immunology, Odense University Hospital, DK-5000 Odense, Denmark
| | - Mie Topholm Bruun
- Department of Clinical Immunology, Odense University Hospital, DK-5000 Odense, Denmark
| | - Janna Nissen
- Department of Clinical Immunology, Copenhagen University Hospital, DK-2100 Copenhagen Ø, Denmark
| | - Michael Schwinn
- Department of Clinical Immunology, Copenhagen University Hospital, DK-2100 Copenhagen Ø, Denmark
| | - Thorsten Brodersen
- Department of Clinical Immunology, Zealand University Hospital, DK-4700 Naestved, Denmark
| | - Christina Mikkelsen
- Department of Clinical Immunology, Copenhagen University Hospital, DK-2100 Copenhagen Ø, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health, Copenhagen University, DK-2200 Copenhagen Ø, Denmark
| | - Susanne Gjørup Sækmose
- Department of Clinical Immunology, Zealand University Hospital, DK-4700 Naestved, Denmark
| | - Erik Sørensen
- Department of Clinical Immunology, Copenhagen University Hospital, DK-2100 Copenhagen Ø, Denmark
| | - Lene Holm Harritshøj
- Department of Clinical Immunology, Copenhagen University Hospital, DK-2100 Copenhagen Ø, Denmark
| | - Bitten Aagaard
- Department of Clinical Immunology, Aalborg University Hospital, DK-9000 Aalborg, Denmark
| | - Khoa Manh Dinh
- Department of Clinical Immunology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark
| | - Michael P. Busch
- Department of Laboratory Medicine, University of California San Francisco, San Francisco, CA, USA
- Vitalant Research Institute, San Francisco, CA, USA
| | - Charlotte Sværke Jørgensen
- Department of Virus and Microbiological Special Diagnostics, Statens Serum Institut, DK-2300 Copenhagen S, Denmark
| | - Tyra Grove Krause
- Epidemiological Infectious Disease Preparedness, Statens Serum Institut, DK-2300 Copenhagen S, Denmark
| | - Henrik Ullum
- Epidemiological Infectious Disease Preparedness, Statens Serum Institut, DK-2300 Copenhagen S, Denmark
| | - Sisse Rye Ostrowski
- Department of Clinical Immunology, Copenhagen University Hospital, DK-2100 Copenhagen Ø, Denmark
- Department of Clinical Medicine, University of Copenhagen, DK-2200 Copenhagen Ø, Denmark
| | - Laura Espenhain
- Epidemiological Infectious Disease Preparedness, Statens Serum Institut, DK-2300 Copenhagen S, Denmark
| | - Ole Birger Vesterager Pedersen
- Department of Clinical Immunology, Zealand University Hospital, DK-4700 Naestved, Denmark
- Department of Clinical Medicine, University of Copenhagen, DK-2200 Copenhagen Ø, Denmark
| |
Collapse
|
4
|
Sass MR, Juul TS, Skov R, Iversen K, Harritshøj LH, Sørensen E, Ostrowski SR, Andersen O, Ekstrøm CT, Ullum H, Nielsen J, Hageman I, Fink-Jensen A. SARS-CoV-2 seroprevalence among patients with severe mental illness: A cross-sectional study. PLoS One 2022; 17:e0264325. [PMID: 35231037 PMCID: PMC8887729 DOI: 10.1371/journal.pone.0264325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 02/03/2022] [Indexed: 01/22/2023] Open
Abstract
Patients with severe mental illness (SMI) i.e. schizophrenia, schizoaffective disorder, and bipolar disorder are at increased risk of severe outcomes if infected with coronavirus disease 2019 (COVID-19). Whether patients with SMI are at increased risk of COVID-19 is, however, sparsely investigated. This important issue must be addressed as the current pandemic could have the potential to increase the existing gap in lifetime mortality between this group of patients and the background population. The objective of this study was to determine whether a diagnosis of schizophrenia, schizoaffective disorder, or bipolar disorder is associated with an increased risk of COVID-19. A cross-sectional study was performed between January 18th and February 25th, 2021. Of 7071 eligible patients with schizophrenia, schizoaffective disorder, or bipolar disorder, 1355 patients from seven psychiatric centres in the Capital Region of Denmark were screened for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies. A total of 1258 unvaccinated patients were included in the analysis. The mean age was 40.5 years (SD 14.6), 54.3% were female. Fifty-nine of the 1258 participants had a positive SARS-CoV-2 antibody test, corresponding to a adjusted seroprevalence of 4.96% (95% CI 3.87-6.35). No significant difference in SARS-CoV-2-risk was found between female and male participants (RR = 1.32; 95% CI 0.79-2.20; p = .290). No significant differences in seroprevalences between schizophrenia and bipolar disease were found (RR = 1.12; 95% CI 0.67-1.87; p = .667). Seroprevalence among 6088 unvaccinated blood donors from the same region and period was 12.24% (95% CI 11.41-13.11). SARS-CoV-2 seroprevalence among included patients with SMI was significantly lower than among blood donors (RR = 0.41; 95% CI 0.31-0.52; p < .001). Differences in seroprevalences remained significant when adjusting for gender and age, except for those aged 60 years or above. The study is registered at ClinicalTrails.gov (NCT04775407). https://clinicaltrials.gov/ct2/show/NCT04775407?term=NCT04775407&draw=2&rank=1.
Collapse
Affiliation(s)
- Marie Reeberg Sass
- Psychiatric Centre Copenhagen, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Mental Health Services, The Capital Region of Denmark, Copenhagen, Denmark
| | - Tobias Søgaard Juul
- Psychiatric Centre Copenhagen, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Mental Health Services, The Capital Region of Denmark, Copenhagen, Denmark
| | - Robert Skov
- Infection Disease Preparedness, Statens Serum Institut, Copenhagen, Denmark
| | - Kasper Iversen
- Department of Cardiology and Department of Emergency Medicine, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Lene Holm Harritshøj
- Department of Clinical Immunology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Erik Sørensen
- Department of Clinical Immunology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Sisse Rye Ostrowski
- Department of Clinical Immunology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Ove Andersen
- Department of Emergency and Clinical Research Centre, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark
| | - Claus Thorn Ekstrøm
- Department of Public Health, Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark
| | | | - Jimmi Nielsen
- Mental Health Services, The Capital Region of Denmark, Copenhagen, Denmark
- Psychiatric Centre Glostrup, Mental Health Services, University of Copenhagen, Glostrup, Denmark
| | - Ida Hageman
- Mental Health Services, The Capital Region of Denmark, Copenhagen, Denmark
| | - Anders Fink-Jensen
- Psychiatric Centre Copenhagen, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Mental Health Services, The Capital Region of Denmark, Copenhagen, Denmark
| |
Collapse
|
5
|
Hønge BL, Hindhede L, Kaspersen KA, Harritshøj LH, Mikkelsen S, Holm DK, Nilsson AC, Sækmose SG, Sørensen E, Aagaard B, Hjalgrim H, Jørgensen CS, Krause TG, Ullum H, Pedersen OBV, Ostrowski SR, Erikstrup C. Long-term detection of SARS-CoV-2 antibodies after infection and risk of re-infection. Int J Infect Dis 2022; 116:289-292. [PMID: 35077881 PMCID: PMC8783526 DOI: 10.1016/j.ijid.2022.01.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/15/2022] [Accepted: 01/17/2022] [Indexed: 12/17/2022] Open
Abstract
Objectives To evaluate long-term sensitivity for detection of total antibodies against SARS-CoV-2 Methods From week 41, 2020, through week 26, 2021, all Danish blood donations were tested for SARS-CoV-2 antibodies with the Wantai assay. The results were linked with polymerase chain reaction (PCR) test results from the Danish Microbiological Database (MiBa). Results During the study period, 105,646 non-vaccinated Danish blood donors were tested for SARS-CoV-2 antibodies, and 3,806 (3.6%) had a positive PCR test before the blood donation. Among the donors with a positive PCR test, 94.2% subsequently also had a positive antibody test. The time between the positive PCR test and the antibody test was up to 15 months and there was no evidence of a decline in proportion with detectable antibodies over time. A negative serological result test was associated with a higher incidence of re-infection (Incidence Rate Ratio = 0.102 (95% confidence interval (CI): 0.039–0.262)). Conclusion Among healthy blood donors, 94.2% developed SARS-CoV-2 antibodies after infection, and a lack of detectable antibodies was associated with re-infection.
Collapse
|
6
|
Kaspersen KA, Hindhede L, Boldsen JK, Mikkelsen S, Vestergaard LS, Berthelsen ASN, Moustsen-Helms IR, Holm DK, Nilsson AC, Sækmose SG, Sørensen E, Harritshøj LH, Aagaard B, Hjalgrim H, Lillevang ST, Jørgensen CS, Krause TG, Ullum H, Pedersen OBV, Ostrowski SR, Erikstrup C. Estimation of SARS-CoV-2 infection fatality rate by age and comorbidity status using antibody screening of blood donors during the COVID-19 epidemic in Denmark. J Infect Dis 2021; 225:219-228. [PMID: 34788834 PMCID: PMC8689980 DOI: 10.1093/infdis/jiab566] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 11/09/2021] [Indexed: 02/06/2023] Open
Abstract
Background Studies presenting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection fatality rate (IFR) for healthy individuals are warranted. We estimate IFR by age and comorbidity status using data from a large serosurvey among Danish blood donors and nationwide data on coronavirus disease 2019 (COVID-19) mortality. Methods Danish blood donors aged 17–69 years donating blood October 2020–February 2021 were tested with a commercial SARS-CoV-2 total antibody assay. IFR was estimated for weeks 11 to 42, 2020 and week 43, 2020 to week 6, 2021, representing the first 2 waves of COVID-19 epidemic in Denmark. Results In total, 84944 blood donors were tested for antibodies. The seroprevalence was 2% in October 2020 and 7% in February 2021. Among 3898039 Danish residents aged 17–69 years, 249 deaths were recorded. The IFR was low for people <51 years without comorbidity during the 2 waves (combined IFR=3.36 per 100000 infections). The IFR was below 3‰ for people aged 61–69 years without comorbidity. IFR increased with age and comorbidity but declined from the first to second wave. Conclusions In this nationwide study, the IFR was very low among people <51 years without comorbidity.
Collapse
Affiliation(s)
- Kathrine Agergård Kaspersen
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark.,Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, Roskilde, Denmark
| | - Lotte Hindhede
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark
| | - Jens Kjærgaard Boldsen
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark.,Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, Roskilde, Denmark
| | - Susan Mikkelsen
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark
| | | | | | | | - Dorte Kinggaard Holm
- Department of Clinical Immunology, Odense University Hospital, Odense C, Denmark
| | | | | | - Erik Sørensen
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen Ø, Denmark
| | - Lene Holm Harritshøj
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen Ø, Denmark
| | - Bitten Aagaard
- Department of Clinical Immunology, Aalborg University Hospital, Aalborg, Denmark
| | - Henrik Hjalgrim
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen S, Denmark
| | - Søren Thue Lillevang
- Department of Clinical Immunology, Odense University Hospital, Odense C, Denmark
| | - Charlotte Sværke Jørgensen
- Department of Virus and Microbiological Special Diagnostics, Statens Serum Institut, Copenhagen S, Denmark
| | - Tyra Grove Krause
- Infectious Disease Preparedness, Statens Serum Institut, Copenhagen S, Denmark
| | | | - Ole Birger Vestager Pedersen
- Department of Clinical Immunology, Zealand University Hospital, Naestved, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen Ø, Denmark
| | - Sisse Rye Ostrowski
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen Ø, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen Ø, Denmark
| | - Christian Erikstrup
- Department of Clinical Immunology, Aarhus University Hospital, Aarhus N, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus C, Denmark
| |
Collapse
|
7
|
Uhlving HH, Harritshøj LH, Christensen VB, Ifversen M. Anti-CD19 CAR T cells administration was feasible in a child with primary hepatitis B infection. Pediatr Blood Cancer 2021; 68:e29208. [PMID: 34227723 DOI: 10.1002/pbc.29208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/11/2021] [Accepted: 06/17/2021] [Indexed: 11/07/2022]
Affiliation(s)
- Hilde Hylland Uhlving
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Lene Holm Harritshøj
- Department of Clinical Immunology, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Vibeke Brix Christensen
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Marianne Ifversen
- Department of Pediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| |
Collapse
|
8
|
Harritshøj LH, Kirkegaard-Klitbo DM, Mejer N, Panum I, Midgley SE, Ullum H, Benfield T. Prevalence of anti-hepatitis E virus immunoglobulin G in HIV-infected individuals over three decades. Int J Infect Dis 2019; 84:67-72. [PMID: 31063824 DOI: 10.1016/j.ijid.2019.04.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/25/2019] [Accepted: 04/26/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Hepatitis E virus (HEV) genotype 3 is endemic in Europe, and the infection is mostly subclinical or acute and self-limiting. However, persistent infection is described among HIV-infected individuals. The prevalence of antibodies against HEV (anti-HEV) among HIV-infected persons varies geographically and is unknown in Denmark. Rates of co-infection with HEV among HIV-infected individuals in Denmark over three decades, from the early 1980s to 2013, were investigated. METHODS A total of 2506 HIV-infected persons were investigated from two cohorts followed at Hvidovre Hospital, Denmark. Blood samples were tested retrospectively for anti-HEV, including samples from 2216 persons who were enrolled in a prospective clinical cohort and followed between 1995 and 2013, as well as samples from 290 persons from a historical cohort followed between 1980 and 1994. For anti-HEV seroconverting individuals, serial samples were tested for HEV RNA. Factors associated with anti-HEV status were explored using multivariable logistic regression analysis. RESULTS The overall HEV seroprevalence rates were stable during the 1980s, 1990s, and 2000-2013 (23.1%, 22.9%, and 23.7%, respectively). In all decades, rates of anti-HEV increased with older age, and anti-HEV seropositivity was associated with older generations, HIV risk group, and geographic origin. Persistent HEV infection was not detected in any of 57 individuals with anti-HEV seroconversion. CONCLUSIONS HEV seroprevalence rates were stable in HIV-infected individuals from the early 1980s to 2013. Rates increased with age. No evidence of persistent HEV infection was detected. Infection with HEV is frequent, but persistent HEV infection is rare among HIV-infected individuals.
Collapse
Affiliation(s)
| | - Ditte Marie Kirkegaard-Klitbo
- Department of Infectious Diseases, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Niels Mejer
- Department of Infectious Diseases, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark
| | - Inge Panum
- Department of Clinical Microbiology, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark
| | | | - Henrik Ullum
- Department of Clinical Immunology, Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Benfield
- Department of Infectious Diseases, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
9
|
Vestergaard HT, Harritshøj LH, Midgley SE, Ullum H, Kampmann P. Transfusion transmission of hepatitis A virus with fecal shedding in a previously hepatitis A vaccinated recipient. J Infect Chemother 2018; 24:766-768. [PMID: 29490881 DOI: 10.1016/j.jiac.2018.01.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 01/25/2018] [Accepted: 01/30/2018] [Indexed: 11/28/2022]
Abstract
We describe a rare case of hepatitis A virus (HAV) replication in feces despite presence of hepatitis A antibodies in an acute myeloid leukemia (AML) patient after transfusion with HAV contaminated platelets. The patient has been vaccinated against HAV years before the AML diagnosis. Transient infection and reshedding should thus be considered in antibody-positive hematological patients. Transfusion associated HAV transmission is rare, and little evidence exists on the clinical consequences and possible effect of treatment with immunoglobulin. Further reporting on fecal shedding despite antibodies are needed, as HAV antibody levels are used as course of action for post-exposure prophylaxis and infection control.
Collapse
Affiliation(s)
| | - Lene Holm Harritshøj
- Department of Clinical Immunology, Blood Bank, Rigshospitalet, Copenhagen, Denmark
| | | | - Henrik Ullum
- Department of Clinical Immunology, Blood Bank, Rigshospitalet, Copenhagen, Denmark
| | - Peter Kampmann
- Department of Hematology, Rigshospitalet, Copenhagen, Denmark
| |
Collapse
|
10
|
Sarkodie F, Hassall O, Owusu-Dabo E, Owusu-Ofori S, Bates I, Bygbjerg IC, Owusu-Ofori A, Harritshøj LH, Ullum H. Improving the screening of blood donors with syphilis rapid diagnostic test (RDT) and rapid plasma reagin (RPR) in low- and middle-income countries (LMIC). Transfus Med 2016; 27:52-59. [PMID: 27723157 DOI: 10.1111/tme.12363] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 09/12/2016] [Accepted: 09/14/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND Syphilis testing conventionally relies on a combination of non-treponemal and treponemal tests. The primary objective of this study was to describe the positive predictive value (PPV) of a screening algorithm in a combination of a treponemal rapid diagnostic test (RDT) and rapid plasma reagin (RPR) test at Komfo Anokye Teaching Hospital (KATH), Ghana. MATERIALS AND METHODS From February 2014 to January 2015, 5 mL of venous blood samples were taken from 16 016 blood donors and tested with a treponemal RDT; 5 mL of venous blood was taken from 526 consenting initial syphilis sero-reactive blood donors. These RDT reactive samples were confirmed with an algorithm, applying the Vitros® /Abbott-Architect® algorithm as gold standard. RESULTS A total of 478 of 526 RDT reactive donors were confirmed positive for syphilis, making a PPV of 90·9%. Of the 172 (32·7%) donors who were also RPR positive, 167 were confirmed, resulting in a PPV of 97·1%. The PPV of the combined RDT and RPR (suspected active syphilis) testing algorithm was highest among donors at an enhanced risk of syphilis, family/replacement donors (99·9%), and among voluntary donors above 25 years (98·6%). DISCUSSION Screening of blood donors by combining syphilis RDT and RPR with relatively good PPV may provide a reasonable technology for LMIC that has a limited capacity for testing and can contribute to the improvement of blood safety with a minimal loss of donors.
Collapse
Affiliation(s)
- F Sarkodie
- Transfusion Medicine Unit, Komfo Anokye Teaching Hospital, Kumasi, Ghana.,Faculty of Health and Life Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - O Hassall
- Faculty of Health and Life Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - E Owusu-Dabo
- School of Public Health, School of Medical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.,Kumasi Centre for Collaborative Research, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - S Owusu-Ofori
- Transfusion Medicine Unit, Komfo Anokye Teaching Hospital, Kumasi, Ghana
| | - I Bates
- Faculty of Health and Life Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - I C Bygbjerg
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - A Owusu-Ofori
- Department of Clinical Microbiology Kumasi, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - L H Harritshøj
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen, Denmark
| | - H Ullum
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen, Denmark
| |
Collapse
|
11
|
Mannheimer EE, Harritshøj LH, Katzenstein TL. [Hepatitis E and pregnancy]. Ugeskr Laeger 2016; 178:V05160356. [PMID: 27745581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Hepatitis E virus (HEV) infection among pregnant women is severe, often leading to fulminant hepatic failure and death, with mortality rates up to 15-25%. Studies suggest that differences in genotypes/subgenotypes, hormonal and immunological changes during pregnancy may contribute to the severe consequences for pregnant women with HEV. Although the increased mortality among pregnant women predominantly is seen in developing countries where genotype 1 is endemic, there are also large differences in mortality among pregnant women within these countries. The reason for this is not clear.
Collapse
|
12
|
Thørner LW, Erikstrup C, Harritshøj LH, Larsen MH, Kronborg G, Pedersen C, Larsen CS, Pedersen G, Gerstoft J, Obel N, Ullum H. Impact of polymorphisms in the HCP5 and HLA-C, and ZNRD1 genes on HIV viral load. Infect Genet Evol 2016; 41:185-190. [PMID: 27083073 DOI: 10.1016/j.meegid.2016.03.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/11/2016] [Accepted: 03/30/2016] [Indexed: 01/16/2023]
Abstract
AIMS Single nucleotide polymorphisms (SNPs) in the human leucocyte antigen (HLA) complex P5 (HCP5), HLA-C, and near the zinc ribbon domain containing 1 (ZNRD1) have been shown to influence viral load (VL) set point in HIV-infected individuals with a known seroconversion onset. We aimed to determine the influence of HCP5 rs2395029, HLA-C rs9264942, and ZNRD1 rs3869068 on VL in antiretroviral-naïve individuals and on time to the first VL<51 copies/ml and on CD4(+) T-cell recovery after initiation of combination antiretroviral therapy (cART). MATERIAL AND METHODS We genotyped the rs2395029 (A>C), rs9264942 (T>C), and rs3869068 (C>T) SNPs in 1897 Caucasians from The Danish HIV Cohort Study - a prospective, nationwide, population-based study of HIV-infected individuals in Denmark. General linear models evaluated the effect of SNPs on VL in antiretroviral-naïve individuals 0-18months after diagnosis and on CD4(+) T-cell recovery during cART. Cox proportional hazard regression analysis assessed the association with time to first VL<51 copies/ml. All models were assuming additive genetic effects. RESULTS The rs2395029, rs9264942, and rs3869068 minor alleles were associated with lower VL in antiretroviral-naïve individuals (rs2395029: [mean VL (copies/ml)], A/A: 70,795 [61,660-79,433], A/C: 33,884 [19,498-58,884], P=0.002; rs9264942: TT: 81,283 [67,608-97,724], T/C: 63,096 [54,954-75,858], CC: 38,905 [25,119-58,884], P<0.0001; rs3869068, CC: 72,444 [63,096-83,176], C/T: 45,709 [33,113-64,565], TT: 58,884 [20,417-169,824], P=0.01). Moreover, the C-alleles of rs2395029 and rs9264942 were associated with shorter time to VL<51 copies/ml: (HR [95% confidence interval], 1.67 [1.09-1.72], P=0.008; 1.16 [1.06-1.28], P=0.002; 1.30 [1.08-1.53], P=0.005, respectively, adjusted for last VL before cART). None of the SNPs predicted CD4(+) T-cell recovery during cART. CONCLUSIONS The minor alleles of rs2395029, rs9264942, and rs3689068 associate with lower VL among antiretroviral-naïve individuals and with shorter time to first VL<51copies/ml during cART even after adjustment for VL before cART.
Collapse
Affiliation(s)
- Lise Wegner Thørner
- Dept. of Clinical Immunology, Copenhagen University Hospital, Copenhagen, Denmark.
| | - Christian Erikstrup
- Dept. of Clinical Immunology, Aarhus University Hospital, Skejby, Aarhus, Denmark
| | - Lene Holm Harritshøj
- Dept. of Clinical Immunology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Margit Hørup Larsen
- Dept. of Clinical Immunology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Gitte Kronborg
- Dept. of Infectious Diseases, Copenhagen University Hospital, Hvidovre, Denmark
| | - Court Pedersen
- Dept. of Infectious Diseases, Odense University Hospital, Odense, Denmark
| | | | - Gitte Pedersen
- Dept. of Infectious Diseases, Aarhus University Hospital, Aalborg, Denmark
| | - Jan Gerstoft
- Dept. of Infectious Diseases, Copenhagen University Hospital, Copenhagen, Denmark
| | - Niels Obel
- Dept. of Infectious Diseases, Copenhagen University Hospital, Copenhagen, Denmark
| | - Henrik Ullum
- Dept. of Clinical Immunology, Copenhagen University Hospital, Copenhagen, Denmark
| |
Collapse
|
13
|
Lundgren L, Harritshøj LH, Ullum H, Mocroft A, Cunha-Bang CD, Kirkby N, Sørensen SS, Lundgren J, Iversen M, Rasmussen A, Gustafsson F, Sengeløv H. Hepatitis E Virus (HEV)-Infection as Reason for Elevations in Liver Transaminase (ALT-flares) in Transplantation patients. Open Forum Infect Dis 2015. [DOI: 10.1093/ofid/ofv133.913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
14
|
Harritshøj LH, Nielsen C, Ullum H, Hansen MB, Julian HO. Ready-made allogeneic ABO-specific serum eye drops: production from regular male blood donors, clinical routine, safety and efficacy. Acta Ophthalmol 2014; 92:783-6. [PMID: 24629028 DOI: 10.1111/aos.12386] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 02/08/2014] [Indexed: 11/29/2022]
Abstract
PURPOSE To overcome problems and delays of the preparation of autologous serum eye drops, a production line of ABO-specific allogeneic serum eye drops from male blood donors was set up in a blood bank. Feasibility, clinical routine, safety and efficacy were evaluated in a cohort of patients with severe ocular surface disorders. METHODS Serum was derived from 450 ml whole-blood donations from regular male blood donors, produced and tested according to good manufacturing practice and legislation regulating blood products in Denmark. Serum was diluted to 20% (v/v) with NaCl 0.9%, filtered, bottled, registered and stored at -30°C in the blood bank. Upon request, frozen ABO-identical serum drops in lots of 14 bottles could be provided immediately. Safety and efficacy were evaluated in 34 patients with severe ocular surface disease refractory to conventional medical therapy. Patients were treated six times daily for minimum 2-4 weeks. Objective findings and subjective symptoms were compared between day 0 and after 4 weeks of treatment using the Wilcoxon signed-rank test. RESULTS Clinically, no side-effects were observed. In total, 59% of the patients with ocular surface changes improved objectively (slit-lamp examination). Partial or full healing of corneal changes, as well as subjective relief of symptoms, was observed in 16 of 20 patients with keratoconjunctivitis sicca (p < 0.001). The 14 patients with persistent epithelial defect experienced neither objective nor subjective improvements during serum treatment. CONCLUSION Ready-made ABO-identical allogeneic serum eye drops were straightforwardly produced, quality-assured and registered as a safe standard blood product for the treatment of certain cases of severe dry eye disease. Therapeutic efficacy was comparable to previous reports on autologous serum drops.
Collapse
Affiliation(s)
- Lene Holm Harritshøj
- Department of Clinical Immunology; Blood Bank; Rigshospitalet; Copenhagen Denmark
| | - Connie Nielsen
- Department of Clinical Immunology; Blood Bank; Rigshospitalet; Copenhagen Denmark
| | - Henrik Ullum
- Department of Clinical Immunology; Blood Bank; Rigshospitalet; Copenhagen Denmark
| | - Morten Bagge Hansen
- Department of Clinical Immunology; Blood Bank; Rigshospitalet; Copenhagen Denmark
| | | |
Collapse
|
15
|
Harritshøj LH, Erikstrup C, Ullum H. [Virologic safety of donor blood after NAT testing]. Ugeskr Laeger 2012; 174:796. [PMID: 22433553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Lene Holm Harritshøj
- Klinisk Immunologisk Afdeling, Rigshospitalet, Blegdamsvej 9, 2100 København Ø, Denmark.
| | | | | |
Collapse
|
16
|
Omland LH, Krarup H, Jepsen P, Georgsen J, Harritshøj LH, Riisom K, Jacobsen SEH, Schouenborg P, Christensen PB, Sørensen HT, Obel N. Mortality in patients with chronic and cleared hepatitis C viral infection: a nationwide cohort study. J Hepatol 2010; 53:36-42. [PMID: 20400197 DOI: 10.1016/j.jhep.2010.01.033] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Revised: 12/02/2009] [Accepted: 01/03/2010] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS It is unknown whether mortality differs between patients with chronic hepatitis C virus (HCV) replication and those who cleared the virus after infection. We examined the impact of chronic HCV replication on mortality among Danish patients testing positive for HCV antibodies. METHODS This nationwide cohort study focused on Danish patients with at least one HCV RNA measurement available after testing positive for HCV antibodies between 1996 and 2005. To capture long-term prognosis, eligible patients needed to be alive 1year after HCV RNA assessment. We estimated mortality rate ratios (MRRs) using Cox regression (for overall mortality) and subdistribution hazard ratios (SDHRs) for cause-specific mortality, controlling for gender, age, comorbidity, calendar period, alcohol abuse, injection drug use, and income. RESULTS Of the 6292 patients under study, 63% had chronic HCV-infection and 37% had cleared the virus. Five-year survival was 86% (95% confidence interval (CI): 84-87%) in the chronic HCV group and 92% (95% CI: 91-94%) in the cleared HCV group. Chronic HCV-infection was associated with higher overall mortality (MRR: 1.55, 95% CI: 1.28-1.86) and liver-related death (SDHR: 2.42, 95% CI: 1.51-3.88). Chronic HCV-infection greatly increased the risk of death from primary liver cancer (SDHR: 16.47, 95% CI: 2.24-121.00). CONCLUSIONS Patients with chronic HCV-infection are at higher risk of death than patients who cleared the infection. The substantial association found between chronic HCV-infection and death from primary liver cancer supports early initiation of antiviral treatment in chronically HCV-infected patients.
Collapse
|