CompletedNot Applicable

Assessment of Incidence of SARS-CoV-2 Infection and COVID-19 in Brazil (AVISA)

Brazil3,520 participantsStarted 2020-10-25

Plain-language summary

This is an observational study, meaning that no interventions is tested, to determine incidence of SARS-CoV-2 infection and COVID-19 in different clinical sites in Brazil in several age groups. The study aims to assess baseline number of infected participants and perform a follow-up along two years to determine the new cases occurring among participants during the period. All participants will collect blood samples to get more details on the immune response.

Who can participate

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Any sex or age * Providing informed consent * Agreement with all study visits, procedure and contacts Exclusion Criteria: * Previous suspected or confirmed COVID-19 * Febrile illness in the latest 72 hours * Olfactory or gustatory dysfunction in the last three months * Healthcare worker in a service with routine attention to COVID-19 patients * Any conditions that can might hurdle participant's compliance to the study in tha opinion of the study team

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Incidence of SARS-CoV-2 infection

Timeframe: 24 months

Incidence of COVID-19

Timeframe: 24 months

Trial details

NCT IDNCT04355338

SponsorButantan Institute

Sponsor typeOTHER_GOV

Study typeOBSERVATIONAL

Primary completion2021-10-30

View on ClinicalTrials.gov More COVID-19 trials

Plain-language summary

Who can participate

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.