Collection of SARS CoV-2 (COVID-19) Virus Secretions and Serum for Countermeasure Development

May 18, 2026 updated by: Tulane University

Collection of SARS-COV-2 Secretions and Serum for Countermeasure Development (aka ClinSeqSer) is an observational study to understand natural history of SARS-COV-2 infections among special populations and characterise post-covid morbidity through immune response, virus genome sequencing, cytokine response, and virus shedding. Given the descriptions of infection course of patients over the outbreak of 2003 (SARS-Cov01) and since January 2019 in China and Europe, and now worldwide:

  1. Acutely infected patients shed virus that could be of major interest to characterize (viral quantification, characterization of virus shedding -of infective and of non-infective virus) the former reflecting/predictive of severity of disease and the latter reflecting extent/source of contagiosity.
  2. Convalescent infected patients develop a specific anti-virus antibody response that is (likely) protective and therefore suits the preliminary requirement for the potential benefits of the convalescent patient plasma therapeutic infusion approach. In addition, long term effects of COVID-19 commonly known as long-haulers remains clinically unclear.

Thousands of patients have now been diagnosed with COVID-19 in Louisiana (444,000 cases, 10,122 deaths, 2.2% mortality in Louisiana (LA), as of March 2021), and numerous patients are now also complaining of post-acute sequelae of SARS-CoV-2 (PASC). The investigators want to further clarify questions surrounding rational confinement duration and therapeutic approach by collecting plasma of convalescent patients to identify optimal antibody titer by ELISA, specificity of naturally occurring inflammatory (protein/antibody and RNA) response, and possibly test in vitro antibody neutralization activity.

Study Overview

Status

Recruiting

Conditions

Detailed Description

The investigators are proposing two strategies to help mitigate COVID-19:

  1. Establish active data registry for infected patients, which includes both sequence of viral isolate and clinical course. The purpose of this would be to determine whether sequences are evolving, which might affect planned countermeasures, and to evaluate which comorbidities/concurrent medications/clinical findings are the highest predictors for risk. This could allow us to better target screening and triage efforts, and potentially discontinue/substitute out medications that are worsening infection. For example, if diabetics confirm to be a particularly high risk they should potentially receive more rigorous screening, earlier admission, earlier medication optimization. For another example, there is some concern that patients with hypertension on angiotensin receptor blocking agents may have enhanced expression of Angiotensin Converting Enzyme (ACE-2), the entry receptor for SARS-CoV-2. If the investigators can confirm whether patients on Angiotensin Receptor Blocker (ARBs) have severe outcomes, this would justify the potential switch to alternate agents. Collect serum/plasma from convalescent patients. Patients who have been diagnosed with COVID-19 and have recovered (>14 days since diagnosis) or individuals with no defined past COVID-19 infection, but the potential to have been exposed to (and mounted antibodies against) COVID-19 will provide a sample of whole blood, as well as other samples.
  2. Determine long-term sequelae and pulmonary-related health outcomes for infected patients with COVID-19. Patients who survive infection with SARS Cov-2 are at risk of physical and psychological complications of lung injury. The investigators aim to determine the long-term sequelae of this infection. This would allow the investigators to better understand the long-term health impacts (physiological, functional, and quality-of-life) of this disease. Specifically, they aim to 1) conduct a systematic study of subjects post-COVID in order to determine which part(s) of that morbidity (clinical and laboratory) is caused by COVID, and 2) Identify predictors of post-COVID morbidity, including any protective role of treatments used during acute infection, and identify biomarkers (virus and host) that might be associated with severity/duration of the post-COVID syndrome. Overall, the investigators aim to define the entity of post-COVID morbidity, or post-acute sequelae of SARS-CoV-2 (PASC) so that they can then begin to explore methods to treat, and, ideally, prevent this morbidity.

The investigators are expanding the criteria for inclusion in this study to other viruses in order to

  1. Develop a comparator group to determine whether immunomodulation induced by SARS CoV-2 differs from other respiratory viruses,
  2. Prepare for both routine seasonal and potential future influenza pandemic, which has been an ongoing concern for years now, and
  3. Expand their ability to monitor for potential intermixing of seasonal coronaviruses and SARS CoV-2, which could impact diagnostic tests for both.

Study Type

Observational

Enrollment (Estimated)

2000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

    • Louisiana
      • New Orleans, Louisiana, United States, 70112
        • Recruiting
        • Tulane University Medical Center
        • Contact:
        • Principal Investigator:
          • Dahlene Fusco, MD, PhD
      • New Orleans, Louisiana, United States, 70112
        • Recruiting
        • University Medical Center New Orleans
        • Contact:
        • Principal Investigator:
          • Dahlene Fusco, MD, PhD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

6 months to 120 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Probability Sample

Study Population

Population 1: Infected patients

Once a positive diagnosis of COVID-19 has been made in the clinical setting, the clinical team caring for the patient will ask the patient / family whether they would be willing to be contacted by the study team about the study.

Population 2: Convalescent patients

Persons with a history of past (>14 days ago) diagnosis of COVID-19 infection will be invited to participate in this study. In addition, persons who have had a significant exposure to a patient with COVID-19 (contact at distance of less than 6 feet without personal protective equipment) and have remained asymptomatic for 14 days following exposure will be recruited.

Description

Population 1:

Inclusion Criteria:

  1. Positive diagnostic test for COVID-19, influenza A or B virus, non COVID-19 coronavirus, parainfluenza virus, rhinovirus, adenovirus, or metapneumovirus
  2. Patient or legally authorized representative has provided verbal consent / verbal HIPAA (or parental permission form and assent form, as appropriate)

Exclusion Criteria:

  • None

Population 2:

Inclusion Criteria:

  1. Positive diagnostic test for COVID-19 >14 days prior, OR potential to have been exposed to (and mounted antibodies against) COVID-19, OR positive diagnostic test for influenza A or B virus, non COVID-19 coronavirus, parainfluenza virus, rhinovirus, adenovirus, or metapneumovirus
  2. Patient or legally authorized representative has signed informed consent (or parental permission form and assent form, as appropriate)

Exclusion Criteria:

Patients with the following criteria:

  • Aged under 6 months old
  • Anemia (Hgb <7)
  • Platelet <80

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Population 1
Once a positive diagnosis of COVID-19 has been made in the clinical setting, the clinical team caring for the patient will ask the patient / family whether they would be willing to be contacted by the study team about the study. If so, a trained member of the study team will describe the study in person or by telephone. Community members who see the study flyer will also be able to reach out to the study team to learn more about the study and to find out if they meet eligibility criteria. If the eligible patient / legally authorized representative / legal guardian would like to participate. The verbal informed consent / verbal HIPAA, assent, and/or parental permission (as appropriate) will then be obtained in person.
Population 2
Persons with a history of past (>14 days ago) diagnosis of COVID-19 infection will be invited to participate in this study. In addition, persons who have had significant exposure to a patient with COVID-19 (contact at a distance of less than 6 feet without personal protective equipment) and have remained asymptomatic for 14 days following exposure will be recruited. Candidates will be identified through initial enrollment in Population 1, or by clinicians who have been informed of the study but are not part of the study team. Then, the clinical care team will ask the patient if he/she is willing to be contacted by the study team. Community members who see the study flyer or are otherwise informed of the study will also be able to reach out to the study team. Additionally, individuals with no defined past COVID-19 infection, but the potential to have been exposed to, and mounted antibodies against, COVID-19 will also be enrolled in Population 2 for this study.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
COVID-19 clinically severe vs non severe cases
Time Frame: 2 Years

To determine the clinical and laboratory risk factors which lead to severe vs non-severe COVID-19 clinical course in ambulatory patients.

Severe COVID-19 cases defined as death or hospitalized on invasive mechanical ventilation or Extracorporeal membrane oxygenation (ECMO).

Non-severe COVID-19 cases defined as hospitalized on non-invasive ventilation or high flow oxygen devices or requiring low flow supplemental oxygen (less than 15L) or not requiring supplemental oxygen, requiring ongoing medical care or no longer requires on going medical care or not hospitalized.

2 Years
Post-COVID symptoms onset at 3 months
Time Frame: 3 Months
The proportion (in percentage) of the study cohort exhibiting post-COVID symptoms after recovering from COVID-19 at 3 months from initial date of symptom onset. Post-COVID symptoms which are all new since COVID infection are fatigue, tiredness or exhaustion, muscle aches/muscle pains, pain in joints, problems in sleep, forgetfulness/memory problems, difficulty thinking or concentrating, dizziness or fainting, fever, headache, nausea or abdominal pain, diarrhea, runny nose, sore throat, cough, shortness of breath/abnormal breathing, loss of smell, loss of taste, and inability to walk.
3 Months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Post-COVID symptoms onset at 6 months
Time Frame: 6 months
The proportion (in percentage) of the study cohort exhibiting post-COVID symptoms after recovering from COVID-19 at 6 months from initial date of symptom onset. Post-COVID symptoms which are all new since COVID infection are fatigue, tiredness or exhaustion, muscle aches/muscle pains, pain in joints, problems in sleep, forgetfulness/memory problems, difficulty thinking or concentrating, dizziness or fainting, fever, headache, nausea or abdominal pain, diarrhea, runny nose, sore throat, cough, shortness of breath/abnormal breathing, loss of smell, loss of taste, and inability to walk.
6 months
Post-COVID symptoms onset at 9 months
Time Frame: 9 months
The proportion (in percentage) of the study cohort exhibiting post-COVID symptoms after recovering from COVID-19 at 9 months from initial date of symptom onset. Post-COVID symptoms which are all new since COVID infection are fatigue, tiredness or exhaustion, muscle aches/muscle pains, pain in joints, problems in sleep, forgetfulness/memory problems, difficulty thinking or concentrating, dizziness or fainting, fever, headache, nausea or abdominal pain, diarrhea, runny nose, sore throat, cough, shortness of breath/abnormal breathing, loss of smell, loss of taste, and inability to walk.
9 months
Post-COVID symptoms onset at 12 months
Time Frame: 12 months
The proportion (in percentage) of the study cohort exhibiting post-COVID symptoms after recovering from COVID-19 at 12 months from initial date of symptom onset. Post-COVID symptoms which are all new since COVID infection are fatigue, tiredness or exhaustion, muscle aches/muscle pains, pain in joints, problems in sleep, forgetfulness/memory problems, difficulty thinking or concentrating, dizziness or fainting, fever, headache, nausea or abdominal pain, diarrhea, runny nose, sore throat, cough, shortness of breath/abnormal breathing, loss of smell, loss of taste, and inability to walk.
12 months
Post-COVID symptoms onset at 15 months
Time Frame: 15 months
The proportion (in percentage) of the study cohort exhibiting post-COVID symptoms after recovering from COVID-19 at 15 months from initial date of symptom onset. Post-COVID symptoms which are all new since COVID infection are fatigue, tiredness or exhaustion, muscle aches/muscle pains, pain in joints, problems in sleep, forgetfulness/memory problems, difficulty thinking or concentrating, dizziness or fainting, fever, headache, nausea or abdominal pain, diarrhea, runny nose, sore throat, cough, shortness of breath/abnormal breathing, loss of smell, loss of taste, and inability to walk.
15 months
Post-COVID symptoms onset at 18 months
Time Frame: 18 months
The proportion (in percentage) of the study cohort exhibiting post-COVID symptoms after recovering from COVID-19 at 18 months from initial date of symptom onset. Post-COVID symptoms which are all new since COVID infection are fatigue, tiredness or exhaustion, muscle aches/muscle pains, pain in joints, problems in sleep, forgetfulness/memory problems, difficulty thinking or concentrating, dizziness or fainting, fever, headache, nausea or abdominal pain, diarrhea, runny nose, sore throat, cough, shortness of breath/abnormal breathing, loss of smell, loss of taste, and inability to walk.
18 months
Post-COVID symptoms onset at 21 months
Time Frame: 21 months
The proportion (in percentage) of the study cohort exhibiting post-COVID symptoms after recovering from COVID-19 at 21 months from initial date of symptom onset. Post-COVID symptoms which are all new since COVID infection are fatigue, tiredness or exhaustion, muscle aches/muscle pains, pain in joints, problems in sleep, forgetfulness/memory problems, difficulty thinking or concentrating, dizziness or fainting, fever, headache, nausea or abdominal pain, diarrhea, runny nose, sore throat, cough, shortness of breath/abnormal breathing, loss of smell, loss of taste, and inability to walk.
21 months
Post-COVID symptoms onset at 24 months
Time Frame: 24 months
The proportion (in percentage) of the study cohort exhibiting post-COVID symptoms after recovering from COVID-19 at 24 months from initial date of symptom onset. Post-COVID symptoms which are all new since COVID infection are fatigue, tiredness or exhaustion, muscle aches/muscle pains, pain in joints, problems in sleep, forgetfulness/memory problems, difficulty thinking or concentrating, dizziness or fainting, fever, headache, nausea or abdominal pain, diarrhea, runny nose, sore throat, cough, shortness of breath/abnormal breathing, loss of smell, loss of taste, and inability to walk.
24 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Dahlene Fusco, MD, PhD, Tulane University School of Medicine

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 17, 2020

Primary Completion (Estimated)

December 1, 2027

Study Completion (Estimated)

December 1, 2027

Study Registration Dates

First Submitted

June 18, 2021

First Submitted That Met QC Criteria

July 7, 2021

First Posted (Actual)

July 9, 2021

Study Record Updates

Last Update Posted (Actual)

May 19, 2026

Last Update Submitted That Met QC Criteria

May 18, 2026

Last Verified

May 1, 2026

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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