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Paris shelter study reveals hidden COVID-19 spread among homeless

NCT ID NCT04470648

Knowledge-focused Sponsor: Institut National de la Santé Et de la Recherche Médicale, France Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at how many people in homeless shelters in Paris had COVID-19 antibodies after the first wave. Researchers tested 179 residents and staff from three shelters to measure past infections and deaths. The goal was to understand the virus's impact on a vulnerable population living in close quarters.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

179 people

The number who actually took part.

Started

Jul 2020

Finished

Aug 2021

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

people hosted and workers at one these 3 centers during the epidemic time (march to may 2020)

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * to have been hosted or working in one the three centers (LHSS Ridder-Plaisance or Saint Michel or Halte femmes) between march and may 2020 * to be aged 18 y or more * to be able to give an informed consent Exclusion Criteria: * people who refuse to participate * not being able to give an informed consent * Person subject to a legal protection measure (safeguard of justice, curatorship or guardianship) * Person who does not understand the information provided on how to carry out the research * Obstacle to venous sampling

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Conditions

The condition(s) this trial relates to.

COVID-19

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

SARS-COV2 infection

Contacts and locations

Locations

  • Haltes pour femmes

    Paris, 75004, France

  • LHSS Ridder-Plaisance

    Paris, 75014, France

  • LHSS Saint-Michel

    Paris, 75012, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.