Health effects of red tide and cyanobacteria blooms in Florida
Official title: Health Outcomes Associated With Algal Blooms of Cyanobacteria and Red Tide in in Florida: Long-Term Health Impacts of Harmful Algal Bloom Exposure, Phase 2
Run by University of Central Florida · NCT07091058 · Data updated 2026-11-12
This project will compare how often adults who live, work, or visit certain Florida counties have respiratory and other symptoms during red tide or cyanobacteria bloom periods to see if exposure leads to more health problems.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 400 (estimated) |
| Sponsor | University of Central Florida Academic / other |
| Locations | 1 site (Multiple Locations, Florida) |
| Status | Recruiting |
| Started | November 13, 2024 |
| Main results expected | June 30, 2026 |
| Study ends | June 30, 2026 |
| Registry record updated | July 29, 2025 |
| Trial ID | NCT07091058 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal participants are English-literate adults (18+) who live, work, or visit the specified Florida counties and can give informed consent.
✕Probably not a fit
People who are pregnant, under 18, prisoners, unable to consent, or who do not spend time in the listed counties are excluded and would not be expected to benefit from participation.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Researchers will use a case-control approach comparing symptom frequency and exposures during bloom and non-bloom periods at multiple Florida sites. Adults will be enrolled from communities around Fort Myers, Stuart, Lake Okeechobee and other listed counties and will report symptoms and exposure history. For exposed participants, local bloom cell density and environmental measures will be compared with reported health effects. Data collection will occur at partner clinics and public health locations to link local bloom conditions with health impacts.
Why it matters
Potential benefit: If successful, the findings could help public health officials issue better warnings and guide actions to reduce exposure and protect people during blooms.
How similar studies have gone: Previous studies, including prior work by these investigators, have shown that brevetoxin-producing red tides cause respiratory symptoms from inhalation, so this study builds on established evidence.
Who can join: the full rules
Show full inclusion / exclusion criteria
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 * prisoner * pregnant women
Where it's running
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University of Central Florida
Multiple Locations, Florida, United States Recruiting
Study contacts
- Principal investigator: Rebecca Koszalinski, PhD, MS, RN, FIEL, CRRN, FARN — University of Central Florida
- Study coordinator: Amoy Fraser, PhD, CCRP, PMP
- Email: Amoy.Fraser@ucf.edu
- Phone: 14072668742
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Investigating the health effects of harmful algal blooms
This study is trying to see how exposure to toxins from harmful algal blooms affects people's health, especially their brain and immune system, by monitoring participants over time.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.