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Respiratory Tract InfectionsVIOOLNCT05318235

Virus Interactions in the Respiratory Tract; a Cohort Study With Children

An observational study of Respiratory Tract Infections and Coinfection, run by UMC Utrecht at 1 site in Netherlands.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Rationale: Prevention of virus induced acute respiratory infection (ARI) is a public health priority. As different respiratory virus infections can interact with each other, occurrence of one virus may influence occurrence of other virus infections. Read more about this study

Who is it for?
Ages 6 weeks to 4 yearsHealthy volunteers can take part
Conditions the study is for
Respiratory Tract Infections, Coinfection
How many people
229 participants
Where
1 siteNetherlands
Study dates
15 Sep 2021to 23 Apr 2024
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 6 weeks to 4 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Study population: Community sample of children living within the region of Utrecht.

Who may be able to join

  • Age between 6 weeks and 4 years AND
  • 1) have older siblings or 2) attend daycare. AND
  • Live within 30 minutes drive from UMCU (by car), have access to a fever thermometer and a freezer were biological samples can be temporarily stored

Who cannot join

  • recurrent respiratory tract infections and are treated with antibiotic prophylaxis OR
  • known immunodeficiency OR
  • chronic lung disease that increases susceptibility to infection (e.g. cystic fibrosis) OR
  • congenital anomalies of the airways
  • Parents/guardians have insufficient comprehension of Dutch language (all study communication and questionnaires are in Dutch language)

Trial locations and contacts

1 site in 1 country.

Netherlands1 site
  • UMC Utrecht

    Utrecht, 3584 CX

Other trials in Netherlands

About this study

Rationale: Prevention of virus induced acute respiratory infection (ARI) is a public health priority. As different respiratory virus infections can interact with each other, occurrence of one virus may influence occurrence of other virus infections. Such interactions can have implications for the effects of vaccination on non-target diseases. In this project, we will quantify such interactions between respiratory viruses by longitudinally studying a cohort of young children.

Objective: To quantify the strength and direction of interactions between important respiratory virus infections in young children.

Read more

Study design: This is a prospective observational cohort study.

Study population: Children between 6 weeks and 4 years of age residing in the Utrecht area of the Netherlands.

Main study parameters/endpoints: Frequency, timing and sequences of occurrence of respiratory virus infections will be studied for each participant using weekly collected nasal specimens during 16 weeks follow-up. Detection will be based on PCR testing for a panel of common respiratory viruses. From these data, estimation of virus interaction parameters will be based on self-controlled-case series analysis.

Nature and extend of the burden and risks associated with participation, benefit and group relatedness: This study is observational in nature. There will be no direct benefit to research participants. The study includes biological sampling. The results of the tests done on these samples may not contribute to improving the participant's health. Minimal inconvenience and discomfort to the participant may arise from study visits and biological sampling.

Being tested
No intervention
Keywords
Child, Viral interference
Medical subject headings
Respiratory Tract Infections, Coinfection

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • No interventionOther

    No intervention

Study groups in NCT05318235
Study groupRoleWhat they receive
ChildrenChildren between 6 weeks and 4 years of age who have a older sibling or attend day care
Receives: Other: No intervention

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Strength of viral interactions

    To quantify the strength of interactions between common respiratory virus infections in young children.

    Measured: Samples and data collected during 16 weeks of follow-up

  2. Direction of viral interactions

    To quantify the direction of interactions between common respiratory virus

    Measured: Samples and data collected during 16 weeks of follow-up

Secondary outcomes (4)
  1. To quantify relative change in disease severity due to viral interactions.

    This will be measured as changes in disease severity scores of one virus infection upon recent exposure to another virus infection

    Measured: Samples and data collected during 16 weeks of follow-up

  2. To estimate the seasonal incidence rates of both symptomatic and asymptomatic infection by common respiratory viruses in young children

    Measured: Samples and data collected during 16 weeks of follow-up

  3. To estimate the probability of symptomatic versus asymptomatic infection per respiratory virus and host factors influencing this.

    Measured: Samples and data collected during 16 weeks of follow-up

  4. To quantify the changes in viral exposure in the pandemic-to-post-pandemic transition period and study effects of these changes on viral interaction patterns

    Measured: Samples and data collected during 16 weeks of follow-up

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Apr 2022
  2. Study start15 Sep 2021
  3. Primary completion23 Apr 2024
  4. Study completion23 Apr 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
229 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05318235
Sponsor's protocol ID
NL78424.041.21
Acronym
VIOOL
Status last verified
May 2024
First submitted
17 Mar 2022
Last updated
9 May 2024
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

An observational study of Respiratory Tract Infections and Coinfection, run by UMC Utrecht at 1 site in Netherlands.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 9 May 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Strength of viral interactions (time frame: Samples and data collected during 16 weeks of follow-up). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 May 2024.

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