NCT07091058 · University of Central Florida
Harmful Algal Blooms
What this study is about
The purpose of this study is to compare the frequency of symptoms, exposure and health impacts in persons living in areas where they are exposed to bloom and non-bloom periods of cyanobacteria and red tide in Florida.
View original scientific description
The purpose of this study is to compare the frequency of symptoms, exposure and health impacts in persons living in areas where they are exposed to bloom and non-bloom periods of cyanobacteria and red tide in Florida.
Primary outcome measures
To correlate self- reported symptom occurrence with recreational/occupational cyanotoxin exposure (measured in air and water environmental samples) and cyanotoxin levels in blood, nasal swab
Time frame: 2 years
These data will be linked to determine if and how much contact the participant may have had with Florida waters, presence of cyanotoxin in the bio samples (blood, nasal swabs, and urine) and self-reported health issues to determine the impact of harmful algal blooms (HABs) on human health. In addition, this study will explore a potential link between self-reported COVID-19 exposure/infection and susceptibility to cyanotoxins and establish a HAB biorepository.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- 18 years or older
- live, visit, and/ or work in the following Florida counties: Indian River, St. Lucie, Charlotte, Collier, Hendry, Hillsborough, Lee, Manatee, Martin, Monroe, Okeechobee, Palm Beach, Pasco, Pinellas, Indian River, and/or Sarasota
- able to read and understand English
Exclusion criteria
- unable to independently consent
- younger than 18 years old
- pregnant women
Where
- Multiple Locations, Florida
Collaborators
Florida Atlantic University, Florida Department of Health
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Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 29, 2025 · Source of record for eligibility and locations