Understanding the impact of long COVID in Brazil

Incidence, Associated Factors, and Burden of Post COVID-19 Condition in Brazil

Observational Inova Medical · NCT05822193

This study looks at how long COVID affects adults in Brazil who had symptoms during the omicron wave to see what problems they face and how it impacts their quality of life.

Quick facts

Study typeObservational
Enrollment1694 (estimated)
Ages18 Years and up
SexAll
SponsorInova Medical Academic / other
Locations1 site (Cachoeirinha, Rio Grande do Sul)
Trial IDNCT05822193 on ClinicalTrials.gov

What this trial studies

This national retrospective cohort study aims to enroll 1,694 adult patients diagnosed with COVID-19 during the omicron wave in Brazil. Participants will be recruited online and assessed for the incidence and potential risk factors associated with post-acute COVID-19 syndrome, as well as its impact on health-related quality of life. The study focuses on individuals who experienced symptomatic COVID-19 after January 2022 and evaluates outcomes at least 90 days post-diagnosis.

Who should consider this trial

Good fit: Ideal candidates are Brazilian residents aged 18 and older who had symptomatic COVID-19 confirmed by testing after January 2022.

Not a fit: Patients who are unable to participate in remote research appointments or have significant communication difficulties may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the long-term effects of COVID-19 and inform strategies for improving patient care.

How similar studies have performed: Other studies have explored post-COVID conditions, but this specific approach focusing on the Brazilian population during the omicron wave is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years;
* Brazilian resident;
* Symptomatica COVID-19 confirmed by reverse transcriptase polymerase chain reaction (RT-PCR) or antigen test for SARS-COV-2 after January 2022, with diagnosis at least 90 days before recruitment.

Exclusion Criteria:

* No availability to participate in remote research appointments;
* Communication difficulty (aphasia, important hearing loss, non-portuguese speaker, severe dementia)
* Refuse to provide informed consent

Where this trial is running

Cachoeirinha, Rio Grande do Sul

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Post-Acute COVID-19 Syndrome
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.