deltatrials
Completed OBSERVATIONAL NCT04401085

COVID-19: Herd Immunity Study in the Czech Republic (SARSCoV2CZPrev)

Herd Immunity Study SARS-CoV-2-CZ-Preval

Sponsor: Brno University Hospital

Updated 11 times since 2020 Last updated: May 29, 2020 Started: Apr 23, 2020 Primary completion: May 1, 2020 Completion: May 1, 2020
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A observational or N/A phase clinical study on COVID and SARS-CoV 2, this trial is completed. The trial is conducted by Brno University Hospital and has accumulated 11 data snapshots since 2020. Infectious disease trials contribute critical data for public health response and treatment development.

Status Flow

~Jun 2020 – ~Jul 2020 · 30 days · monthly snapshotCompleted~Jul 2020 – ~Nov 2020 · 4 months · monthly snapshotCompleted~Nov 2020 – ~Jan 2021 · 2 months · monthly snapshotCompleted~Jan 2021 – ~Oct 2021 · 9 months · monthly snapshotCompleted~Oct 2021 – ~Dec 2021 · 2 months · monthly snapshotCompleted~Dec 2021 – ~May 2022 · 5 months · monthly snapshotCompleted~May 2022 – ~Nov 2022 · 6 months · monthly snapshotCompleted~Nov 2022 – ~Jul 2024 · 20 months · monthly snapshotCompleted~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshotCompleted~Sep 2024 – ~Dec 2025 · 15 months · monthly snapshotCompleted~Dec 2025 – present · 7 months · monthly snapshotCompleted

Change History

11 versions recorded
  1. Dec 2025 — Present [monthly]

    Completed

  2. Sep 2024 — Dec 2025 [monthly]

    Completed

  3. Jul 2024 — Sep 2024 [monthly]

    Completed

  4. Nov 2022 — Jul 2024 [monthly]

    Completed

  5. May 2022 — Nov 2022 [monthly]

    Completed

Show 6 earlier versions
  1. Dec 2021 — May 2022 [monthly]

    Completed

  2. Oct 2021 — Dec 2021 [monthly]

    Completed

  3. Jan 2021 — Oct 2021 [monthly]

    Completed

  4. Nov 2020 — Jan 2021 [monthly]

    Completed

  5. Jul 2020 — Nov 2020 [monthly]

    Completed

  6. Jun 2020 — Jul 2020 [monthly]

    Completed

    First recorded

Apr 2020

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • Brno University Hospital
  • Charles University, Czech Republic
  • Czech Academy of Sciences
  • Czech Statistical Office
  • Faculty of Health Studies, J. E. Purkyně University in Ústí nad Labem
  • Faculty of Military Health Sciences, University of Defence in Brno
  • General University Hospital, Prague
  • Institute for Clinical and Experimental Medicine
  • Institute of Health Information and Statistics of the Czech Republic
  • Krajská zdravotní, a.s., Ústí nad Labem Region Hospitals
  • Masaryk Memorial Cancer Institute
  • Masaryk University
  • Military University Hospital, Prague
  • Ministry of Health, Czech Republic
  • Palacky University
  • University Hospital Olomouc
  • University of Ostrava
Data source: Institute of Health Information and Statistics of the Czech Republic

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations