deltatrials
Completed OBSERVATIONAL NCT00533182

Influenza in People With Normal and Weakened Immune Systems

Influenza in the Non-immunocompromised and Immunocompromised Host

Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)

Conditions Respiratory Infections Viral Infections
Updated 40 times since 2017 Last updated: Nov 9, 2022 Started: Jan 3, 2008 Primary completion: Dec 31, 2019 Completion: Aug 25, 2022
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 Respiratory Infections and Viral Infections, this trial is completed. The trial is conducted by National Institute of Allergy and Infectious Diseases (NIAID) and has accumulated 40 data snapshots since 2008. Infectious disease trials contribute critical data for public health response and treatment development.

Status Flow

~Jan 2017 – ~Jun 2017 · 5 months · monthly snapshot~Jun 2017 – ~Jan 2018 · 7 months · monthly snapshot~Jan 2018 – ~Apr 2018 · 3 months · monthly snapshot~Apr 2018 – ~Jun 2018 · 2 months · monthly snapshot~Jun 2018 – ~Jul 2018 · 30 days · monthly snapshot~Jul 2018 – ~Aug 2018 · 31 days · monthly snapshot~Aug 2018 – ~Sep 2018 · 31 days · monthly snapshot~Sep 2018 – ~Oct 2018 · 30 days · monthly snapshot~Oct 2018 – ~Dec 2018 · 2 months · monthly snapshot~Dec 2018 – ~Jan 2019 · 31 days · monthly snapshot~Jan 2019 – ~Feb 2019 · 31 days · monthly snapshot~Feb 2019 – ~Mar 2019 · 28 days · monthly snapshot~Mar 2019 – ~Apr 2019 · 31 days · monthly snapshot~Apr 2019 – ~May 2019 · 30 days · monthly snapshot~May 2019 – ~Aug 2019 · 3 months · monthly snapshot~Aug 2019 – ~Sep 2019 · 31 days · monthly snapshot~Sep 2019 – ~Oct 2019 · 30 days · monthly snapshot~Oct 2019 – ~Dec 2019 · 2 months · monthly snapshot~Dec 2019 – ~Mar 2020 · 3 months · monthly snapshot~Mar 2020 – ~Jul 2020 · 4 months · monthly snapshot~Jul 2020 – ~Aug 2020 · 31 days · monthly snapshot~Aug 2020 – ~Nov 2020 · 3 months · monthly snapshot~Nov 2020 – ~Dec 2020 · 30 days · monthly snapshot~Dec 2020 – ~Jan 2021 · 31 days · monthly snapshot~Jan 2021 – ~Feb 2021 · 31 days · monthly snapshot~Feb 2021 – ~Sep 2021 · 7 months · monthly snapshot~Sep 2021 – ~Oct 2021 · 30 days · monthly snapshot~Oct 2021 – ~Nov 2021 · 31 days · monthly snapshot~Nov 2021 – ~Jan 2022 · 2 months · monthly snapshot~Jan 2022 – ~Feb 2022 · 31 days · monthly snapshot~Feb 2022 – ~Apr 2022 · 59 days · monthly snapshot~Apr 2022 – ~May 2022 · 30 days · monthly snapshot~May 2022 – ~Jun 2022 · 31 days · monthly snapshot~Jun 2022 – ~Jul 2022 · 30 days · monthly snapshot~Jul 2022 – ~Sep 2022 · 2 months · monthly snapshot~Sep 2022 – ~Nov 2022 · 2 months · monthly snapshot~Nov 2022 – ~Dec 2022 · 30 days · monthly snapshot~Dec 2022 – ~Jul 2024 · 19 months · monthly snapshot~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshot~Sep 2024 – present · 23 months · monthly snapshot

Change History

40 versions recorded

  1. Sep 2024 — Present [monthly]

    Completed

  2. Jul 2024 — Sep 2024 [monthly]

    Completed

  3. Dec 2022 — Jul 2024 [monthly]

    Completed

  4. Nov 2022 — Dec 2022 [monthly]

    Completed

  5. Sep 2022 — Nov 2022 [monthly]

    Completed

    Status: Recruiting → Completed

▶ Show 35 earlier versions

  1. Jul 2022 — Sep 2022 [monthly]

    Recruiting

  2. Jun 2022 — Jul 2022 [monthly]

    Recruiting

  3. May 2022 — Jun 2022 [monthly]

    Recruiting

  4. Apr 2022 — May 2022 [monthly]

    Recruiting

  5. Feb 2022 — Apr 2022 [monthly]

    Recruiting

  6. Jan 2022 — Feb 2022 [monthly]

    Recruiting

  7. Nov 2021 — Jan 2022 [monthly]

    Recruiting

  8. Oct 2021 — Nov 2021 [monthly]

    Recruiting

  9. Sep 2021 — Oct 2021 [monthly]

    Recruiting

  10. Feb 2021 — Sep 2021 [monthly]

    Recruiting

  11. Jan 2021 — Feb 2021 [monthly]

    Recruiting

  12. Dec 2020 — Jan 2021 [monthly]

    Recruiting

  13. Nov 2020 — Dec 2020 [monthly]

    Recruiting

  14. Aug 2020 — Nov 2020 [monthly]

    Recruiting

  15. Jul 2020 — Aug 2020 [monthly]

    Recruiting

  16. Mar 2020 — Jul 2020 [monthly]

    Recruiting

  17. Dec 2019 — Mar 2020 [monthly]

    Recruiting

  18. Oct 2019 — Dec 2019 [monthly]

    Recruiting

  19. Sep 2019 — Oct 2019 [monthly]

    Recruiting

  20. Aug 2019 — Sep 2019 [monthly]

    Recruiting

  21. May 2019 — Aug 2019 [monthly]

    Recruiting

  22. Apr 2019 — May 2019 [monthly]

    Recruiting

  23. Mar 2019 — Apr 2019 [monthly]

    Recruiting

  24. Feb 2019 — Mar 2019 [monthly]

    Recruiting

  25. Jan 2019 — Feb 2019 [monthly]

    Recruiting

  26. Dec 2018 — Jan 2019 [monthly]

    Recruiting

  27. Oct 2018 — Dec 2018 [monthly]

    Recruiting

  28. Sep 2018 — Oct 2018 [monthly]

    Recruiting

  29. Aug 2018 — Sep 2018 [monthly]

    Recruiting

  30. Jul 2018 — Aug 2018 [monthly]

    Recruiting

  31. Jun 2018 — Jul 2018 [monthly]

    Recruiting

  32. Apr 2018 — Jun 2018 [monthly]

    Recruiting

    Phase: NA → None

  33. Jan 2018 — Apr 2018 [monthly]

    Recruiting NA

  34. Jun 2017 — Jan 2018 [monthly]

    Recruiting NA

  35. Jan 2017 — Jun 2017 [monthly]

    Recruiting NA

    First recorded

Jan 2008

Trial started

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

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • National Institute of Allergy and Infectious Diseases (NIAID)
Data source: National Institutes of Health Clinical Center (CC)

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

Study Locations