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CompletedNCT00774774GRIPMASKUpdated Apr 26, 2011

Face Masks for Preventing Influenza Transmission

A Phase 4 interventional study of control and Face mask in Influenza Human, sponsored by Assistance Publique - Hôpitaux de Paris. Completed at 1 site in France. Open to participants aged 5 Years and older. Per ClinicalTrials.gov, last updated 2011-04-26.

Sponsored by Assistance Publique - Hôpitaux de Paris · Phase 4, Interventional, and Prevention

Phase
Phase 4
Study type
Interventional
Enrollment
372
Allocation
Randomized
Ages
5 Years and older
Sex
All
01

Study summary

This work aims to measure the effectiveness of face mask worn by a patient with flu to avoid transmission to other persons in the household.

Read the detailed description

Background. Non pharmaceutical interventions, and in particular the wearing of face masks, could play a role in controlling the transmission of influenza in the early stages of the epidemic. In the French pandemic plan, surgical masks are recommended in contagious patients in wards. The effectiveness of such masks in preventing transmission of influenza A virus is unknown. Our project aims to assess the preventive efficacy and tolerance of surgical mask.

The primary objective is to measure the decrease of the number of secondary cases of flu in households where the index case will wear a surgical mask during its period of infectiousness (5 days), compared to households where the index case will not be subject to this intervention. Secondary objectives are: (1) to study the feasibility and tolerance of wearing a mask continuously during the period of viral shedding; (2) virological description of infection spreading among household contacts based on virological collections.

02

Conditions studied

  • Influenza Human

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Keywords

  • Influenza, human
  • Masks
  • Disease Transmission, Horizontal
03

In context

Influenza, Human

2,214 studies on the registry are indexed under Influenza, Human; 163 are open to participants now.

This study's enrollment of 372 is above the median of 238 across 1,853 interventional studies indexed under Influenza, Human.

Browse Influenza, Human studies →

Lead sponsor

Assistance Publique - Hôpitaux de Paris is the lead sponsor of 3,505 studies on the registry; 1,006 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
5 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Patient seeking medical advice for:

  • For symptoms less than 48 hours, combining fever> = 37.8 ° C and a cough,
  • during the period of a seasonal influenza epidemic (as defined by the Sentinel network)
  • Older than 5 years
  • And living in a household size between 3 to 8..
  • The patient is the first case in the household (index patient). The patient has a positive rapid influenza A test.
  • Informed consent.
  • Affiliation to the social security.

Exclusion criteria

Exclusion Criteria:

  • When concomitant influenza cases are known in other householders
  • When the patient is suffering from asthma or COPD (ongoing treatment):
  • Hospitalization.
  • Treatment by a neuraminidase inhibitor.
05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
372 participants (actual)

Study arms

  • Placebo comparator
    2

    No intervention

    Device: control

  • Experimental
    1

    Mask

    Device: Face mask

Interventions

  • Devicecontrol

    Non sterile surgical mask,high filtration "AEROKYN",type 2 with eardrop

  • DeviceFace mask

    Non sterile surgical mask, high filtration "AEROKYN", type 2 with eardrop Masks will be worn at home by the patient over a period of 5 days following inclusion, whenever a member of the household will attend the same room or in other confined space (eg car), and changed after 3 hours of consecutive use or sooner if they are tor Masks will not be worn: * during the night, * when the patient is alone in the room. Moreover, for all households, an incentive in nocturnal isolation of index-patient will be recommended

06

What researchers measure

Primary outcomes

  1. The number of household contacts who will develop within 7 days of the inclusion of the index patient a respiratory syndrome defined by fever> = 37.8 ° C and a cough or a sore throat.

    Time frame: during the study

Secondary outcomes

  1. clinical events in all household members on the entire monitoring period (21 days).

    Time frame: 21 days

  2. Adverse events related to wearing a mask - a safety issue.

    Time frame: during the study

  3. Number of days of wearing a mask, number of masks used.

    Time frame: during the study

  4. Drug-consumption, in particular antibiotics

    Time frame: during the study

  5. Sick-leave from work (for adults contacts), or from school (for children of school age).

    Time frame: during the study

  6. Quality of life in the index patient.

    Time frame: during the study

  7. Infection with influenza virus at different time, among all household members.

    Time frame: during the study

  8. Quantification of viral load in patients infected.

    Time frame: during the study

  9. Characterization of viruses isolated (sub-type and sequence of the portion of HA1 gene for haemagglutinin).

    Time frame: during the study

07

Study locations

1 site
  • Hopital Saint Antoine
    Paris, 75012, France
08

References and documents

Publications

  • Sies H, Akerboom TP, Tager JM. Mitochondrial and cytosolic NADPH systems and isocitrate dehydrogenase indicator metabolites during ureogensis from ammonia in isolated rat hepatocytes. Eur J Biochem. 1977 Jan;72(2):301-7. doi: 10.1111/j.1432-1033.1977.tb11253.x. PubMed 13998 ↗
  • Canini L, Andreoletti L, Ferrari P, D'Angelo R, Blanchon T, Lemaitre M, Filleul L, Ferry JP, Desmaizieres M, Smadja S, Valleron AJ, Carrat F. Surgical mask to prevent influenza transmission in households: a cluster randomized trial. PLoS One. 2010 Nov 17;5(11):e13998. doi: 10.1371/journal.pone.0013998. PubMed 21103330 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 26, 2011, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00774774
Lead sponsor
Assistance Publique - Hôpitaux de Paris
First posted
Oct 17, 2008
Start date
Jan 2009
Primary completion
Sep 2009
Completion
Sep 2009
Last update
Apr 26, 2011

Study contacts

Fabrice CARRAT, MD PhD
principal investigator · Assistance Publique - Hôpitaux de Paris

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2008. You cannot join it, but the record below documents what was studied.

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