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Taking people in CanadaNo phase

Follows adults with COVID-19 to study long-term health effects in Montreal

Follows adults after COVID-19 to track lasting complications in organs and build a biobank.

Key facts

Who runs it
Emilia Falcone, MD
Where
Montreal, CanadaSee the site
Trial code
Registry title
Institut de Recherche Cliniques de Montreal (IRCM) Post-COVID-19 (IPCO) Research Clinic
Status
Recruiting
People taking part
650 people, planned
Started
1 Feb 2021
Expected to end
4 Nov 2027
Type of study
Observational, 6 groups
Treatments tested
  • Medical follow-up
Record updated
17 April 2026

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for adults in Quebec who had COVID-19 or a flu-like viral infection, and for people who never had COVID-19. They are followed for short- and long-term complications after infection.

Age
18 to 100 years old
Sex
All sexes can join.
Disease stage
People who had COVID-19 (asymptomatic, mild, or moderate/severe), people with an undiagnosed viral infection, and people who never had COVID-19 as a comparison group.
Biomarker or test result
One of these is needed: a positive COVID-19 test (PCR, serology or antibody/antigen) in the last 60 months, or symptoms of COVID-19 while living with a person who tested positive. A negative COVID-19 test also counts for the comparison group.

Main reasons for not taking part

  • Not a current resident of Quebec
  • Does not speak English or French
  • Has no personal email
  • Known pregnancy
  • The study doctor (PI) judges the person not appropriate for enrollment

The registry criteria, word for word

Show all 10 criteriaShow less

Who can take part

  • Any gender, ≥ 18 years old
  • Current resident of Quebec
  • Speaks English or French
  • Have a personal email (to which to send reminders and questionnaire by email ); AND; 1 of the following criteria:
  • Individuals with at least one COVID-19 positive PCR test, serology or antibody/antigen test in the last 60 months at day of recruitment. In the absence of a positive COVID-19 test, individuals with symptoms consistent with COVID-19 while living with a person who had a confirmed positive PCR, serology or antibody/antigen COVID-19 test in the last 60 months at day of recruitment (epidemiologic link); OR
  • Individuals who tested negative for COVID-19 while living with a household member who tested positive for COVID-19 or had a close contact with the viral infection in the context of their work, and never had any COVID-19 related symptoms (presumed COVID negative control group); OR
  • Individuals who don't have any COVID-19 related symptoms actually, have never had tested positive, and have had at least one negative PCR, serology or antibody/antigen COVID-19 test (presumed COVID negative control group); OR
  • Individuals with an undiagnosed viral infection in the last 60 months at day of recruitment and have persistent symptoms (or not) after the participant has recovered from a viral infection

Who cannot take part

  • Any participant not deemed appropriate for enrollment according to the PI
  • Known pregnancy (female will not be automatically screened for pregnancy upon enrollment unless there is a possibility that they might be pregnant)

Check if you might fit

Answer for yourself. This is not a decision: only the study team can say whether you can take part.

  • Are you between 18 and 100 years old?

Where in Canada

  • Institut de Recherches Cliniques de MontrealMontreal, CanadaContact: Charlotte Du Sablon, M.Sc.Taking people

About the trial

What the trial wants to find out

While many COVID19 studies are focusing on the immediate biological impact of SARS-CoV2 infection, this multidisciplinary research clinic will inform the global community on its recovery phase across patient cohorts with different degrees of disease severity (asymptomatic, mild [non-hospitalized], moderate/severe [hospitalized]). The primary objectives are to: 1) evaluate the short- and long-term end-organ complications post-COVID-19 in relation to the severity of the acute COVID-19 infection and 2) establish a post-COVID-19 biobank. The secondary objective is to develop a model that can predict end-organ complications using epidemiological and clinical data. To complete the objectives, the study will follow 6 patient cohorts: Patients who had previous asymptomatic or mild COVID-19 (no need for oxygen), patients who had previous moderate/severe COVID-19 (patients who had an oxygen requirement; moderate=oxygen by nasal cannula; severe=oxygen by high flow nasal cannula, non-invasive positive pressure ventilation or intubation), patients who had COVID-19 but did not develop the post-COVID-19 condition, patients who have never had COVID-19, patients who had flu-like symptoms but did not have signs or symptoms related to the infection lasting beyond 4 weeks from the date of symptom-onset, and patients with flu-like symptoms and have signs or symptoms related to the infection lasting beyond 4 weeks from the date of symptom-onset. Patients will be recruited into these cohorts using a strategy that targets the following populations: patients that were hospitalized in centers across Montreal, patients already followed at the IRCM (non-COVID-19) clinic, essential workers, and members of the same household as patients already enrolled in the IPCO clinic research protocol. The IPCO clinic research protocol is the first in the province of Quebec to systematically follow patients post-COVID-19 for short- and long-term complications including end-organ damage while building an extensive biobank that can support future mechanistic research projects.

The 6 groups in the trial

  • Long COVID group

    Patients who had previous asymptomatic or mild COVID-19 and have signs or symptoms related to COVID-19 lasting beyond 4 weeks from the date of COVID-19 symptom-onset or diagnosis (mild=never required supplemental oxygen during the acute phase of the infection)

    Treatment: Medical follow-up

  • Long COVID-hospitalized group

    Patients who had previous moderate or severe COVID-19 and have signs or symptoms related to COVID-19 lasting beyond 4 weeks from the date of COVID-19 symptom-onset or diagnosis (moderate=required supplemental oxygen by nasal cannula during the acute phase of the infection; severe=required supplemental oxygen by either high-flow nasal cannula, non-invasive positive pressure ventilation or intubation

    Treatment: Medical follow-up

  • COVID-19 Recovered group

    Patients who had COVID-19 but did not have signs or symptoms related to COVID-19 lasting beyond 4 weeks from the date of COVID-19 symptom-onset or diagnosis

    Treatment: Medical follow-up

  • COVID-19 negative group

    Presumed COVID negative patients (i.e., either 1) patients who never had symptoms consistent with COVID-19 AND never tested positive for COVID-19 by molecular or rapid test.)

    Treatment: Medical follow-up

  • Recovered post-viral group

    Patients with a history of acute flu-like illness who do not continue to experience persistent signs or symptoms attributable to the infection for ≥4 weeks from symptom onset.. Eligible patients may have laboratory-confirmed viral infection other than COVID-19 or a suspected viral infection without laboratory confirmation. Patients with confirmed COVID-19 are excluded

    Treatment: Medical follow-up

  • Symptomatic post-viral group

    Patients with a history of acute flu-like illness who continue to experience persistent signs or symptoms attributable to the infection for ≥4 weeks from symptom onset. Eligible patients may have laboratory-confirmed viral infection other than COVID-19 or a suspected viral infection without laboratory confirmation. Patients with confirmed COVID-19 are excluded.

    Treatment: Medical follow-up

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
IRCM Post-COVID-19 (IPCO) Research Clinic: a Multidisciplinary Approach to Evaluate Short and Long-term Complications of COVID-19
Plain-language title
Follows adults with COVID-19 to study long-term health effects in MontrealGenerated from the registry record. The registry title is the official one.
AI summary
From the trial's eligibility criteria. Read by machine on 12 November 2026.
Fit questions
Built from NCT04736732, who can take part
Record updated
17 April 2026