Prospective data collection of SARS-CoV-2 positive tested employees of Klinken der Stadt Köln with post-infectious long-lasting symptoms (Long COVID) with the aim of characterization, quantification and analysis of the symptoms

Prospective data collection of SARS-CoV-2 positive tested employees of Klinken der Stadt Köln with post-infectious long-lasting symptoms (Long COVID) with the aim of characterization, quantification and analysis of the symptoms - HALE Study 2022

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00030178

Enrollment

Registered

2023-05-02

Start date

2022-07-04

Completion date

Unknown

Last updated

2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

U09.9 G93.3

Interventions

Group 1: Trial group: The participants take part in a qualitative interview with help of a developed questionnaire, which focuses on existing symptoms in particular. In addition, questionnaires are us

Eligibility

Sex/Gender

All

Age

18 Years to 67 Years

Inclusion criteria

Inclusion criteria: Arm 1 (trial group): Written informed consent, SARS-CoV-2 positive between March 2020 and May 2021, SARS-CoV-2 detected by PCR test, employee of Kliniken der Stadt Köln or working there via subcontractors, persistent fatigue Arm 2 (control group): Written consent, no known SARS-CoV-2 infection at the time of recruitment, employee of Kliniken der Stadt Köln gGmbH or working there via subcontractors, employee feels physically healthy and does not name any serious previous illnesses

Exclusion criteria

Exclusion criteria: Not meeting inclusion criteria

Design outcomes

Primary

Measure	Time frame
Applicability of the diagnostic criteria of ME/CFS disease to hospital workers within July and December 2022 after SARS-CoV-2 infection between March 2020 and May 2021 with persistent fatigue	—

Secondary

Measure	Time frame
Description of associated symptoms, examination findings and quantification of symptoms. Additionally: comparison of hand strength measurements and blood tests with healthy control group.	—

Countries

Germany

Contacts

Public ContactMatthias Tack

Institut für Hygiene Kliniken der Stadt Köln gGmbH Krankenhaus Merheim Klinikum der Universität Witten/Herdecke

matthias.tack@uni-wh.de+49 221 8907 8313

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Jun 11, 2026