About this trial
This study will examine how common Long COVID is and how symptoms may persist over time in people who have previously had COVID-19. Researchers will collect information about participants' health and symptoms through questionnaires and may collect saliva and other non-invasive oral samples. The study will also examine biological factors in these samples that may be associated with persistent symptoms. The goal is to better understand why some people develop Long COVID and identify factors that may help predict who is more likely to experience persistent symptoms.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age 18 to 75 years.
Previous laboratory-confirmed SARS-CoV-2 infection.
Willing and able to provide informed consent.
Able to complete study questionnaires and study procedures.
Disqualifiers
Current severe periodontal disease with bleeding gums.
Current oral herpes flare, aphthous ulcer, or oral candidiasis (thrush).
Oral viral or bacterial infection within the previous 30 days.
Dry mouth that would prevent adequate saliva collection.
Trial population
Adults aged 18 to 75 years with a history of SARS-CoV-2 infection will be enrolled. The study will include individuals with and without persistent symptoms following infection to characterize the prevalence, severity, and persistence of PASC and identify demographic, clinical, and biological factors associated with Long COVID. Approximately 500 participants will be enrolled at the University of North Carolina at Chapel Hill.
Trial design
Cohort
Prospective
Treatments tested in this trial
This study is observational. Only patients who have previously tested positive for SARS-CoV-2 infection or are experiencing ongoing symptoms.
Other interventionOther:
Treatment groups
Trial outcomes
Primary outcomes
Salivary Proteomic Profile
Unbiased and untargeted mass spectrometric analysis of saliva proteins to obtain a specific proteomic profile
Salivary Metabolomic Profile
Unbiased and untargeted mass spectrometric analysis of saliva metabolites to obtain a specific metabolomic profile
Validated Health Questionnaires: SBQ-LC (Symptom Burden Questionnaire - Long COVID)
This instrument assesses PASC-related symptom burden following COVID-19 infection. Scoring: 0- None, 1- Mild, 2- Moderate, 3-Severe - Higher score reflects greater severity.
Validated Health Questionnaire: C19-YRS (COVID-19 Yorkshire Rehabilitation Scale)
This instrument assesses the long-term physical, cognitive, and psychological outcomes following COVID-19 infection. Scoring: 0-10 numerical scale; a higher score reflects greater severity.
Sponsors and contacts
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University of North Carolina, Chapel Hill
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
Collaborator