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Recruiting NCT06784739

COMMUNITY - the COVID-19 Immunity Study

— Observational COVID 19 Respiratory Synctial Virus Influenza Virus SARS-CoV-2 Virus

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: Blood sampling, Mucosal sampling, PCR-test.
Who it may be relevant to
Registry conditions: COVID 19, Respiratory Synctial Virus, Influenza Virus, SARS-CoV-2 Virus. Basic parameters: from 18 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Sweden
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Overview

The principal aim of the COMMUNITY study is to investigate immune responses following SARS-CoV-2 infection and/or vaccination in healthcare workers and hospitalized COVID-19 patients. The study aims to enroll a total of 5,000 healthcare workers and 500 COVID-19 patients. All participants are enrolled at Danderyd Hospital in Stockholm, Sweden. Participants will be followed every four months with blood and mucosal sampling in addition to demographic and clinical data provided by the participants and from national registries. 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

Detailed description

The COMMUNITY study is designed to longitudinally follow healthcare workers and recovered COVID-19 patients to assess SARS-CoV-2 immune responses over time. Follow-ups are conducted every four months, including serum, PBMC, and mucosa (saliva and nasal secretions) samples. Sub studies with additional samplings and PCR screenings are conducted with regular intervals to assess vaccine responses and correlates to protection against infection.

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.

Interventions

  • Other Blood sampling
    Venous blood sampling
  • Other Mucosal sampling
    Saliva and nasal secretions
  • Diagnostic test PCR-test
    RT qPCR test to determine infection with SARS-CoV-2, Influenza A/B and/or RSV A/B.

Primary outcome measures

  • Antibody responses following SARS-CoV-2 infection and/or vaccination [Time frame: 2022-2026]
Secondary outcome measures (3)
  • Antibody responses following Influenza A/B infection and/or vaccination [Time frame: 2022-2026]
  • Antibody responses following RSV infection [Time frame: 2020-2026]
  • Cellular immune responses following SARS-CoV-2, Influenza A/B and RSV A/B infection and/or vaccination [Time frame: 2020-2026]

Eligibility criteria

Inclusion criteria

  • Health care workers: Employment at Danderyd hospital at time of enrollment
  • COVID-19 patients: Admitted to Danderyd Hospital with confirmed SARS-CoV-2 infection at time of enrollment

Exclusion criteria

  • No exclusion criteria

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: Yes

Study design

Observational model
Cohort

Study locations

Sweden · 2 centers
  • Danderyd hospital — Stockholm
  • Karolinska Institutet Danderyd Hospital — Stockholm

Publications

  • 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. PMID 33267662
  • 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. PMID 37012986
  • 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, Shoema PMID 35781796
  • 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. PMID 34628049
  • 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-1 PMID 35020778
  • 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. PMID 34731533
  • 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. PMID 37680234
  • 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. PMID 33560386

Identifiers

NCT: NCT06784739 · 2020-01653 · 2020-01653

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗