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CompletedNCT04387838SEROSARSCOVUpdated Mar 9, 2021

Study of the SARS-COV-2 (COVID-19) Serological Profile of an Army Training Hospital Staff

An observational study in Sars-CoV2, sponsored by Direction Centrale du Service de Santé des Armées. Completed at 2 sites in France. Open to participants aged 18 Years to 62 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-03-09.

Sponsored by Direction Centrale du Service de Santé des Armées · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
845
Ages
18 Years to 62 Years
Sex
All
01

Study summary

Emerging in China in December 2019, Covid-19, whose pathogen is SARS-Cov-2, was declared a global pandemic in March 2020. The clinical presentation is highly variable, ranging from asymptomatic forms to acute respiratory distress and even death. Transmission occurs through droplets, with a R0 of approximately 3.

Rapidly, population protection measures were put in place by governments, including the confinement of all persons whose functions were not considered essential and the closure of educational institutions.

Health care institutions are places at risk of Covid-19 transmission and hospital staff are particularly exposed, either through direct contact with patients, contact with exposed persons or through the environment. In order to protect personnel, hygiene measures were immediately recalled and reinforced.

This study is aimed at evaluating the incidence rate of anti-SARS-Cov2 seroconversion over 2 months among hospital staff, without any supposed anti-Covid treatment 19.

02

Conditions studied

  • Sars-CoV2
03

In context

Lead sponsor

Direction Centrale du Service de Santé des Armées is the lead sponsor of 93 studies on the registry; 32 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 62 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

The study population is composed of army training hospital staff who have not already been confirmed Covid-19 positive and who are not taking any treatment relative with Covid-19.

Inclusion criteria

  • Army Training Hospital staff

Exclusion criteria

Exclusion Criteria:

  • Individuals who have already been confirmed Covid-19 positive
  • Individuals taking preventive anti-Covid-19 therapy or considering participating in anti-Covid-19 therapy study
  • Individuals on hydroxychloroquine
  • Pregnant or breastfeeding women
  • Non-permanent staff during the study period
  • Individuals identified for a detachment outside the metropole during the study period
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
845 participants (actual)
Patient registry
No

Groups and cohorts

  • Anti-SARS-CoV2 serological status

    At Day 0, a blood sample is collected by venipuncture and a questionnaire is being filled. The anti-SARS-CoV2 serological status is measured by automated microplate ELISA technique on the EVOLIS analyzer (Biorad®), using reagent kits from EUROIMMUN France. For individuals who are anti-SARS-CoV2 seronegative, the same intervention is made at Day 30 and D60. For the individuals who are anti-SARS-CoV2 seropositive, the study follow-up is stopped.

    Diagnostic Test: Anti-SARS-CoV2 Serology · Other: Questionnaire

Interventions

  • Diagnostic testAnti-SARS-CoV2 Serology

    A blood sample is collected by venipuncture at Day 0, Day 30 and Day 60. The anti-SARS-CoV2 serological status is measured by automated microplate ELISA technique on the EVOLIS analyzer (Biorad®), using reagent kits from EUROIMMUN France.

  • OtherQuestionnaire

    Data concerning personal exposure factors are collected in a questionnaire: * Socio-demographic factors: sex, age * Professional factors: Employment (type, pace, reception, service, care practices), wearing of personal protective equipment (type of equipment, frequency of use) and type of hospital * Non-professional factors: Contact with infected individuals, carrying of professional equipment and compliance with barrier measures

06

What researchers measure

Primary outcomes

  1. Anti-SARS-Cov2 seroconversion between Day 0 and Day 60.

    Change of Anti-SARS-Cov2 serological status between Day 0 and Day 60, measured in blood sample.

    Time frame: From Day 0 to Day 60

  2. Anti-SARS-Cov2 seroconversion between Day 0 and Day 30.

    Change of Anti-SARS-Cov2 serological status between Day 0 and Day 30, measured in blood sample.

    Time frame: From Day 0 to Day 30

  3. Anti-SARS-Cov2 seroconversion between Day 30 and Day 60.

    Change of Anti-SARS-Cov2 serological status between Day 30 and Day 60, measured in blood sample.

    Time frame: From Day 30 to Day 60

Secondary outcomes

  1. Anti-SARS-Cov2 seroprevalence at Day 0.

    Anti-SARS-Cov2 seroprevalence measured in blood sample collected at Day 0.

    Time frame: Day 0

  2. Correlation between seroconversion and socio-demographic factors - sex

    Correlation between seroconversion (measured in blood sample) at Day 60 and sex

    Time frame: Day 60

  3. Correlation between seroconversion and socio-demographic factors - age

    Correlation between seroconversion (measured in blood sample) at Day 60 and age

    Time frame: Day 60

  4. Correlation between seroconversion and professional factors - job type

    Correlation between seroconversion (measured in blood sample) at Day 60 and job type (nurse, physician, etc.)

    Time frame: Day 60

  5. Correlation between seroconversion and professional factors - personal protective equipment type

    Correlation between seroconversion (measured in blood sample) at Day 60 and personal protective equipment type

    Time frame: Day 60

  6. Correlation between seroconversion and non-professional factors - contact with infected individuals

    Correlation between seroconversion (measured in blood sample) at Day 60 and contact with infected individuals

    Time frame: Day 60

  7. Correlation between seroconversion and non-professional factors - wearing of professional equipment

    Correlation between seroconversion (measured in blood sample) at Day 60 and wearing of professional equipment

    Time frame: Day 60

  8. Correlation between seroconversion and non-professional factors - respect of barrier gestures

    Correlation between seroconversion (measured in blood sample) at Day 60 and respect of barrier gestures

    Time frame: Day 60

07

Study locations

2 sites
  • Hôpital d'Instuction des Armées Sainte-Anne
    Toulon, 83800, France
  • Hôpital d'Instruction des Armées Robert Picqué
    Villenave-d'Ornon, 33882, France
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 9, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04387838
Lead sponsor
Direction Centrale du Service de Santé des Armées
Responsible party
Sponsor
First posted
May 14, 2020
Start date
May 14, 2020
Primary completion
Aug 15, 2020
Completion
Aug 15, 2020
Last update
Mar 9, 2021

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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