deltatrials
Completed NA INTERVENTIONAL 2-arm NCT04303507

Chloroquine/ Hydroxychloroquine Prevention of Coronavirus Disease (COVID-19) in the Healthcare Setting (COPCOV)

Chloroquine/ Hydroxychloroquine Prevention of Coronavirus Disease (COVID-19) in the Healthcare Setting; a Randomised, Placebo-controlled Prophylaxis Study (COPCOV)

Sponsor: University of Oxford

Conditions Acute Respiratory Illnesses COVID19 Coronavirus
Interventions Chloroquine or Hydroxychloroquine Placebo
Updated 16 times since 2020 Last updated: Apr 3, 2023 Started: Apr 29, 2020 Primary completion: Mar 22, 2022 Completion: Mar 22, 2022
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A NA clinical study on Acute Respiratory Illnesses and COVID19, this trial is completed. The trial is conducted by University of Oxford and has accumulated 16 data snapshots since 2020. Infectious disease trials contribute critical data for public health response and treatment development.

Status Flow

~Apr 2020 – ~May 2020 · 30 days · monthly snapshot~May 2020 – ~Jun 2020 · 31 days · monthly snapshot~Jun 2020 – ~Jul 2020 · 30 days · monthly snapshot~Jul 2020 – ~Aug 2020 · 31 days · monthly snapshot~Aug 2020 – ~Oct 2020 · 2 months · monthly snapshot~Oct 2020 – ~Jan 2021 · 3 months · monthly snapshot~Jan 2021 – ~Jun 2021 · 5 months · monthly snapshot~Jun 2021 – ~Feb 2022 · 8 months · monthly snapshot~Feb 2022 – ~Mar 2022 · 28 days · monthly snapshot~Mar 2022 – ~Jun 2022 · 3 months · monthly snapshot~Jun 2022 – ~Feb 2023 · 8 months · monthly snapshot~Feb 2023 – ~May 2023 · 3 months · monthly snapshot~May 2023 – ~Jul 2024 · 14 months · monthly snapshot~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshot~Sep 2024 – ~Sep 2025 · 12 months · monthly snapshot~Sep 2025 – present · 10 months · monthly snapshot

Change History

16 versions recorded

  1. Sep 2025 — Present [monthly]

    Completed NA

  2. Sep 2024 — Sep 2025 [monthly]

    Completed NA

  3. Jul 2024 — Sep 2024 [monthly]

    Completed NA

  4. May 2023 — Jul 2024 [monthly]

    Completed NA

  5. Feb 2023 — May 2023 [monthly]

    Completed NA

▶ Show 11 earlier versions

  1. Jun 2022 — Feb 2023 [monthly]

    Completed NA

    Status: Active Not Recruiting → Completed

  2. Mar 2022 — Jun 2022 [monthly]

    Active Not Recruiting NA

  3. Feb 2022 — Mar 2022 [monthly]

    Active Not Recruiting NA

    Status: Recruiting → Active Not Recruiting

  4. Jun 2021 — Feb 2022 [monthly]

    Recruiting NA

  5. Jan 2021 — Jun 2021 [monthly]

    Recruiting NA

  6. Oct 2020 — Jan 2021 [monthly]

    Recruiting NA

  7. Aug 2020 — Oct 2020 [monthly]

    Recruiting NA

    Status: Active Not Recruiting → Recruiting

  8. Jul 2020 — Aug 2020 [monthly]

    Active Not Recruiting NA

    Status: Recruiting → Active Not Recruiting

  9. Jun 2020 — Jul 2020 [monthly]

    Recruiting NA

    Status: Not Yet Recruiting → Recruiting

  10. May 2020 — Jun 2020 [monthly]

    Not Yet Recruiting NA

  11. Apr 2020 — May 2020 [monthly]

    Not Yet Recruiting NA

    First recorded

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • University of Oxford
Data source: University of Oxford

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

Study Locations

Abidjan, Côte d’Ivoire , Abomey-Calavi, Benin , Allada, Benin , Bamako, Mali , Bangkok, Thailand , Birmingham, United Kingdom , Bouaké, Côte d’Ivoire , Brighton, United Kingdom , Coventry, United Kingdom , Dharān, Nepal and 12 more locations