Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
RECRUITING
5500 participants
OBSERVATIONAL
2020-04-15
2027-04-30
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Primary outcome:
\- Antibody responses in blood and mucosa following SARS-CoV-2 infection and/or vaccination
Secondary outcomes:
* Cellular immune responses following SARS-CoV-2 infection and/or vaccination
* Antibody responses in blood and mucosa following following Influenza A/B infection and/or vaccination
* Antibody responses in blood and mucosa following following RSV A/B infection
Blood and mucosal samples are collected every 4 months and at tighter intervals in sub studies. PCR testing is conducted upon symptoms of respiratory infections and with regular intervals regardless of symptomatology in sub studies. Participants provide detailed demographic and clinical data through a smart phone application-based questionnaire. Data on infection and vaccination history is collected from national registries
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
A COVID-19 Symptom, Exposure and Immune Response Registry
NCT04348942
Detection of Anti-COVID-19 Antibody Levels in an Hospital Population
NCT04387929
Precision Immunology to Determine the Immune Response in Patients With COVID-19
NCT04360733
Comparison of the Immune Response to Natural COVID-19 Infection and Vaccination
NCT04706390
Evaluation of Immune Response in COVID-19 Patients
NCT04438629
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Analyses include:
* Quantification and characterization of antibody responses
* Evaluation of T and B-cell responses
* RT-qPCR detection of viral infection
* Mucosal microbiome evaluation
Clinical and demographic data, including information on hospital workplace, exposure, immunosuppressive treatments or conditions, and results from SARS-CoV-2 Rapid Diagnostic Tests, are collected at each follow-up through a smartphone-based app system. Data on SARS-CoV-2 infections and vaccinations are obtained from national registries. In addition, data from home based PCR-screenings are continuously being monitored for SARS-CoV-2, Influenza and RSV infections.
All samples are stored in Biobank Sweden.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
COHORT
PROSPECTIVE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
The COMMUNITY cohort - healthcare workers
5000 healthcare workers employed at Danderyd Hospital at time of enrollment
Blood sampling
Venous blood sampling
Mucosal sampling
Saliva and nasal secretions
PCR-test
RT qPCR test to determine infection with SARS-CoV-2, Influenza A/B and/or RSV A/B.
The COMMUNITY cohort - COVID-19 patients
500 patients admitted to Danderyd Hospital with confirmed SARS-CoV-2 infection
Blood sampling
Venous blood sampling
Mucosal sampling
Saliva and nasal secretions
PCR-test
RT qPCR test to determine infection with SARS-CoV-2, Influenza A/B and/or RSV A/B.
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
Blood sampling
Venous blood sampling
Mucosal sampling
Saliva and nasal secretions
PCR-test
RT qPCR test to determine infection with SARS-CoV-2, Influenza A/B and/or RSV A/B.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
* COVID-19 patients: Admitted to Danderyd Hospital with confirmed SARS-CoV-2 infection at time of enrollment
18 Years
ALL
Yes
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Danderyd Hospital
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Charlotte Thålin
MD, PhD
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Charlotte Thålin, MD, PhD
Role: PRINCIPAL_INVESTIGATOR
Department of Clinical Sciences, Karolinska Institutet Danderyd Hospital
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
Danderyd hospital
Stockholm, , Sweden
Karolinska Institutet Danderyd Hospital
Stockholm, , Sweden
Countries
Review the countries where the study has at least one active or historical site.
Central Contacts
Reach out to these primary contacts for questions about participation or study logistics.
Facility Contacts
Find local site contact details for specific facilities participating in the trial.
References
Explore related publications, articles, or registry entries linked to this study.
Ng H, Havervall S, Rosell A, Aguilera K, Parv K, von Meijenfeldt FA, Lisman T, Mackman N, Thalin C, Phillipson M. Circulating Markers of Neutrophil Extracellular Traps Are of Prognostic Value in Patients With COVID-19. Arterioscler Thromb Vasc Biol. 2021 Feb;41(2):988-994. doi: 10.1161/ATVBAHA.120.315267. Epub 2020 Dec 3.
Sachetto ATA, Archibald SJ, Hisada Y, Rosell A, Havervall S, van Es N, Nieuwland R, Campbell RA, Middleton EA, Rondina MT, Thalin C, Mackman N. Tissue factor activity of small and large extracellular vesicles in different diseases. Res Pract Thromb Haemost. 2023 Mar;7(3):100124. doi: 10.1016/j.rpth.2023.100124. Epub 2023 Mar 15.
Monteil V, Eaton B, Postnikova E, Murphy M, Braunsfeld B, Crozier I, Kricek F, Niederhofer J, Schwarzbock A, Breid H, Devignot S, Klingstrom J, Thalin C, Kellner MJ, Christ W, Havervall S, Mereiter S, Knapp S, Sanchez Jimenez A, Bugajska-Schretter A, Dohnal A, Ruf C, Gugenberger R, Hagelkruys A, Montserrat N, Kozieradzki I, Hasan Ali O, Stadlmann J, Holbrook MR, Schmaljohn C, Oostenbrink C, Shoemaker RH, Mirazimi A, Wirnsberger G, Penninger JM. Clinical grade ACE2 as a universal agent to block SARS-CoV-2 variants. EMBO Mol Med. 2022 Aug 8;14(8):e15230. doi: 10.15252/emmm.202115230. Epub 2022 Jul 4.
Mravinacova S, Jonsson M, Christ W, Klingstrom J, Yousef J, Hellstrom C, Hedhammar M, Havervall S, Thalin C, Pin E, Tegel H, Nilsson P, Manberg A, Hober S. A cell-free high throughput assay for assessment of SARS-CoV-2 neutralizing antibodies. N Biotechnol. 2022 Jan 25;66:46-52. doi: 10.1016/j.nbt.2021.10.002. Epub 2021 Oct 7.
Havervall S, Jernbom Falk A, Klingstrom J, Ng H, Greilert-Norin N, Gabrielsson L, Salomonsson AC, Isaksson E, Rudberg AS, Hellstrom C, Andersson E, Olofsson J, Skoglund L, Yousef J, Pin E, Christ W, Olausson M, Hedhammar M, Tegel H, Mangsbo S, Phillipson M, Manberg A, Hober S, Nilsson P, Thalin C. SARS-CoV-2 induces a durable and antigen specific humoral immunity after asymptomatic to mild COVID-19 infection. PLoS One. 2022 Jan 12;17(1):e0262169. doi: 10.1371/journal.pone.0262169. eCollection 2022.
von Meijenfeldt FA, Havervall S, Adelmeijer J, Thalin C, Lisman T. Persistent endotheliopathy in the pathogenesis of long COVID syndrome: Comment from von Meijenfeldt et al. J Thromb Haemost. 2022 Jan;20(1):267-269. doi: 10.1111/jth.15580. Epub 2021 Nov 22. No abstract available.
Blom K, Bladh O, Havervall S, Marking U, Greilert Norin N, Alm JJ, Klingstrom J, Thalin C. Point prevalence of SARS-CoV-2 infection among healthcare workers in March and June 2023 in Sweden. Lancet Reg Health Eur. 2023 Aug 30;33:100725. doi: 10.1016/j.lanepe.2023.100725. eCollection 2023 Oct. No abstract available.
von Meijenfeldt FA, Havervall S, Adelmeijer J, Lundstrom A, Magnusson M, Mackman N, Thalin C, Lisman T. Sustained prothrombotic changes in COVID-19 patients 4 months after hospital discharge. Blood Adv. 2021 Feb 9;5(3):756-759. doi: 10.1182/bloodadvances.2020003968. No abstract available.
Havervall S, Rosell A, Phillipson M, Mangsbo SM, Nilsson P, Hober S, Thalin C. Symptoms and Functional Impairment Assessed 8 Months After Mild COVID-19 Among Health Care Workers. JAMA. 2021 May 18;325(19):2015-2016. doi: 10.1001/jama.2021.5612.
Blom K, Marking U, Havervall S, Norin NG, Gordon M, Garcia M, Tecleab T, Christ W, Forsell M, Phillipson M, Nilsson P, Mangsbo S, Hober S, Aberg M, Klingstrom J, Thalin C. Immune responses after omicron infection in triple-vaccinated health-care workers with and without previous SARS-CoV-2 infection. Lancet Infect Dis. 2022 Jul;22(7):943-945. doi: 10.1016/S1473-3099(22)00362-0. Epub 2022 Jun 9. No abstract available.
Havervall S, Marking U, Greilert-Norin N, Gordon M, Ng H, Christ W, Phillipson M, Nilsson P, Hober S, Blom K, Klingstrom J, Mangsbo S, Aberg M, Thalin C. Impact of SARS-CoV-2 infection on vaccine-induced immune responses over time. Clin Transl Immunology. 2022 Apr 18;11(4):e1388. doi: 10.1002/cti2.1388. eCollection 2022.
von Meijenfeldt FA, Havervall S, Adelmeijer J, Lundstrom A, Magnusson M, Mackman N, Thalin C, Lisman T. COVID-19 is Associated with an Acquired Factor XIII Deficiency. Thromb Haemost. 2021 Dec;121(12):1668-1669. doi: 10.1055/a-1450-8414. Epub 2021 May 5. No abstract available.
Blom K, Havervall S, Marking U, Norin NG, Bacchus P, Groenheit R, Brave A, Thalin C, Klingstrom J. Infection Rate of SARS-CoV-2 in Asymptomatic Healthcare Workers, Sweden, June 2022. Emerg Infect Dis. 2022 Oct;28(10):2119-2121. doi: 10.3201/eid2810.221093. Epub 2022 Aug 23.
Bladh O, Aguilera K, Marking U, Kihlgren M, Greilert Norin N, Smed-Sorensen A, Sallberg Chen M, Klingstrom J, Blom K, Russell MW, Havervall S, Thalin C, Aberg M. Comparison of SARS-CoV-2 spike-specific IgA and IgG in nasal secretions, saliva and serum. Front Immunol. 2024 Mar 15;15:1346749. doi: 10.3389/fimmu.2024.1346749. eCollection 2024.
Bladh O, Marking U, Havervall S, Norin NG, Aguilera K, Hober S, Smed-Sorensen A, Gordon M, Blom K, Aberg M, Klingstrom J, Thalin C. Mucosal immune responses following a fourth SARS-CoV-2 vaccine dose. Lancet Microbe. 2023 Jul;4(7):e488. doi: 10.1016/S2666-5247(23)00102-7. Epub 2023 Apr 20. No abstract available.
Marking U, Bladh O, Havervall S, Greilert-Norin N, Gordon M, Alm JJ, Blom K, Aberg M, Klingstrom J, Thalin C. Mucosal IgA protects against BQ.1 and BQ.1.1 infection. Lancet Infect Dis. 2023 Aug;23(8):e272-e273. doi: 10.1016/S1473-3099(23)00421-8. Epub 2023 Jul 12. No abstract available.
Havervall S, Marking U, Svensson J, Greilert-Norin N, Bacchus P, Nilsson P, Hober S, Gordon M, Blom K, Klingstrom J, Aberg M, Smed-Sorensen A, Thalin C. Anti-Spike Mucosal IgA Protection against SARS-CoV-2 Omicron Infection. N Engl J Med. 2022 Oct 6;387(14):1333-1336. doi: 10.1056/NEJMc2209651. Epub 2022 Sep 14. No abstract available.
Marking U, Bladh O, Aguilera K, Yang Y, Greilert Norin N, Blom K, Hober S, Klingstrom J, Havervall S, Aberg M, Sheward DJ, Thalin C. Humoral immune responses to the monovalent XBB.1.5-adapted BNT162b2 mRNA booster in Sweden. Lancet Infect Dis. 2024 Feb;24(2):e80-e81. doi: 10.1016/S1473-3099(23)00779-X. Epub 2024 Jan 5. No abstract available.
Bladh O, Greilert-Norin N, Havervall S, Marking U, Aguilera K, Alm JJ, Blom K, Aberg M, Klingstrom J, Thalin C. Mucosal and Serum Antibodies 3 Weeks after Symptomatic BA.2.86 Infection. N Engl J Med. 2023 Oct 26;389(17):1626-1628. doi: 10.1056/NEJMc2310347. No abstract available.
Related Links
Access external resources that provide additional context or updates about the study.
Charlotte Thålin Group at KI
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
2020-01653
Identifier Type: OTHER
Identifier Source: secondary_id
2020-01653
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.