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Asymptomatic Flu Project

NCT ID: NCT02868658

Last Updated: 2025-12-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

289 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-10-04

Study Completion Date

2017-03-21

Brief Summary

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Although clinical presentation of influenza is often symptomatic, asymptomatic cases also occur. The knowledge of the incidence of asymptomatic influenza among healthcare workers is very important because of the risk of cross-transmission to hospitalized patients. The principal objective of the study is to estimate the incidence of symptomatic and asymptomatic influenza among healthcare workers in short-stay wards. The results of this study will lead to a better understanding of the burden of asymptomatic influenza among healthcare workers and might be used as an argument to increase influenza vaccine coverage among healthcare workers.

Detailed Description

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Conditions

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Influenza

Keywords

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Influenza health care workers nosocomial asymptomatic France

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Health-care workers

Health-care workers recruited in the study will have blood sampling and naso-pharyngeal bottle-brush sampling

Group Type EXPERIMENTAL

Blood sampling

Intervention Type BIOLOGICAL

Nasal swab

Intervention Type OTHER

Interventions

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Blood sampling

Intervention Type BIOLOGICAL

Nasal swab

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Volunteer health-care workers
* Working in the following wards: short-stay, inpatient (including ICU) and emergency

Exclusion Criteria

* Presence of influenza symptoms at enrolment
* Programmed absence (maternity leave, vacation, etc.)
* Administrative agents
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Hospices Civils de Lyon

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Edouard Herriot Hospital; Department of Epidemiology, Hygiene and Public Health

Lyon, , France

Site Status

Countries

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France

References

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Benet T, Amour S, Valette M, Saadatian-Elahi M, Aho-Glele LS, Berthelot P, Denis MA, Grando J, Landelle C, Astruc K, Paris A, Pillet S, Lina B, Vanhems P; AFP Study Group. Incidence of Asymptomatic and Symptomatic Influenza Among Healthcare Workers: A Multicenter Prospective Cohort Study. Clin Infect Dis. 2021 May 4;72(9):e311-e318. doi: 10.1093/cid/ciaa1109.

Reference Type RESULT
PMID: 32750120 (View on PubMed)

Other Identifiers

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69HCL16_0095

Identifier Type: -

Identifier Source: org_study_id