NCT05346042

Brief Summary

Rationale: In the treatment, care and isolation of COVID-19 patients, one of the most important issues is determining the duration of infectiousness. The current Dutch guideline advises at least 14 days of isolation for seriously ill patients, which is the case for most admitted patients, and at least 21 days for intubated patients. It is believed that in most cases this isolation duration is too long, which is highly undesirable for patients staying in closed single-occupancy rooms. This is known to result in limited contact with healthcare workers (HCW) and to be associated with a higher level of depression among patients. The longer the isolation, the higher the workload for HCW and the higher the costs (e.g. with about 0.5 million admission days in the Netherlands, these work out at about €14 million on personal protective equipment \[PPE\] and cleaning alone). Additionally, isolation demands a larger healthcare workforce, yielding less capacity to provide other care to non-COVID-19 patients, with numerous other consequences. On the other hand, it is possible that some patients were discontinued from isolation too early, leading to a risk of transmission to other patients and to HCW. In conclusion, duration of isolation should be as short as possible for proper patient flow and to avoid unnecessary burden to patients and HCW, and thus to healthcare in general. Therefore, there is an urgent need to define the period of infectiousness of COVID-19. We will develop a safe and effective algorithm for decision on timely discontinuation of isolation of COVID-19 hospitalized patients. Objective: The ultimate goal of this project is to produce new evidence-based criteria for the termination of isolation of hospitalized COVID-19 patients that are safe (very low subsequent risk of transmission to other patients or healthcare workers) while reducing the number of unnecessary days in isolation (thereby improving quality of life of patients, reducing hospital costs, and making optimal use of the scarce number of isolation beds). Multiple sources of data and evidence will be integrated to arrive at these new criteria.

Trial Health

55
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
7,000

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Dec 2022

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

April 25, 2022

Completed
1 day until next milestone

First Posted

Study publicly available on registry

April 26, 2022

Completed
7 months until next milestone

Study Start

First participant enrolled

December 1, 2022

Completed
2.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2025

Completed
11 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2025

Completed
Last Updated

March 5, 2025

Status Verified

March 1, 2025

Enrollment Period

2.2 years

First QC Date

April 25, 2022

Last Update Submit

March 3, 2025

Conditions

Keywords

COVID-19infectiousness durationisolationinfection prevention control measures

Outcome Measures

Primary Outcomes (1)

  • the probability and the duration of being infectious in hospitalized COVID-19 patients, consequently influencing the decision on cessation of isolation

    the probability and the duration of being infectious in hospitalized COVID-19 patients, consequently influencing the decision on cessation of isolation

    Between the end of February 2020 and December 2021

Secondary Outcomes (3)

  • Quantitative Ct-value of RT-PCR

    Between the end of February 2020 and December 2021

  • Quantitative SARS-CoV-2 N-Ag concentration in pg/mL

    Between the end of February 2020 and December 2021

  • Qualitative rapid Ag-test

    Between the end of February 2020 and December 2021

Study Arms (1)

Confirmed Covid-19

All adult COVID-19 patients and health care workers tested positive in the 7 participating hospitals identified between the end of February 2020 and December 2021.

Other: duration infectiousness

Interventions

is the probability and the duration of being infectious in hospitalized COVID-19 patients, consequently influencing the decision on cessation of isolation

Confirmed Covid-19

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodProbability Sample
Study Population

All adult COVID-19 patients tested positive in the 7 participating hospitals between the end of February 2020 and December 2021.

You may qualify if:

  • In order to be eligible to participate in this study, a subject must meet all of the following criteria:
  • Admission for COVID-19 and tested positive between the end of February 2020 and December 1st 2021.
  • Admission for other reasons than COVID-19, but during hospital stay detected with COVID-19.
  • Patients ≥18 years old.

You may not qualify if:

  • A potential subject who meets any of the following criteria will be excluded:
  • Adult patients with registered opt-out for using clinical and/or laboratory data.
  • Patients \<18 years old.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Erasmus Medical Center

Rotterdam, South Holland, 3000 CA, Netherlands

Location

Biospecimen

Retention: SAMPLES WITH DNA

serum surplus material (samples with DNA) + Stored (frozen) longitudinal nasopharyngeal swabs (samples without DNA)

MeSH Terms

Conditions

COVID-19

Condition Hierarchy (Ancestors)

Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract Diseases

Study Officials

  • Margreet C Vos, Prof. dr.

    Erasmus Medical Center

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Epidemiologist, Assistant Professor

Study Record Dates

First Submitted

April 25, 2022

First Posted

April 26, 2022

Study Start

December 1, 2022

Primary Completion

February 1, 2025

Study Completion

December 31, 2025

Last Updated

March 5, 2025

Record last verified: 2025-03

Data Sharing

IPD Sharing
Will share

Other researchers will be able to find the metadata in the data repository on the COVID-19 national Health-RI portal. They could express their interest in the dataset through a.voorintholt@erasmusmc.nl. After meeting the sharing and reuse conditions and approval of the PI, data access will be provided through the COVID-19 national health RI portal.

Shared Documents
STUDY PROTOCOL, SAP
Time Frame
At least 10 years
Access Criteria
Researchers could express their interest in the dataset through a.voorintholt@erasmusmc.nl. After meeting the sharing and reuse conditions and approval of the PI, data access will be provided through the COVID-19 national health RI portal.

Locations