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Algae bloom4/12/2023 Is exposure to harmful algal blooms reportable? In severe cases, liver failure can occur. Other symptoms can include cough, runny eyes and nose, sore throat, and asthma-like symptoms. People who accidentally swallow water or breathe in water droplets containing microcystin can develop gastrointestinal symptoms, such as nausea, vomiting, and diarrhea. Microcystin is one of the cyabobacterial toxins that can be released from bacteria in the water during the life cycle of a blue-green algae bloom. What are the public health issues?īlue green algae, or cyanobacteria, can produce toxins that can cause illnesses in people and animals. The IDNR's Beach Monitoring program tests the water of many of Iowa's beaches and currently also tests for the presence of some toxins caused by harmful algal blooms. Not all algal blooms produce toxins, however. Algal blooms can appear quickly and can last a few hours, days or weeks.īlue green algae can produce toxins that can cause people to get sick. Blooms can occur at any time, but most often occur in late summer or early fall. Blue green algae often form in warm, slow moving waters that are rich in nutrients, such as fertilizer runoff or septic system overflows. Algal blooms usually float to the surface and can be many inches thick, especially near the shoreline. The cloudy or scummy water often smells bad. Within a few days, a bloom can cause clear water to become cloudy or covered in a scum layer. Cyanobacteria occur when algae that are normally present in water grow exuberantly. The kind most frequently found in Iowa are called blue green algae, or cyanobacteria. Several known species of harmful algal blooms occur throughout the world. The Iowa Department of Public Health works collaboratively with the Iowa Department of Natural Resources (IDNR) and CDC to expand a system that tracks and reports human illnesses related to harmful algal blooms. The Harmful Algal Blooms program monitors the health effects of people who come in contact with blue green algae in recreational water. Harmful Algal Blooms Surveillance Initiative Reportable Environmental & Occupational Diseases, Poisonings & Conditions.Adult Blood Lead Epidemiology & Surveillance.Occupational Health & Safety Surveillance.Environmental Public Health Tracking Program. ![]() ![]() Exemptions to Mandatory Blood Lead Testing.Mandatory Reporting of Blood Lead Test Results.What To Do If Your Child Has An Elevated Blood Lead Test.Backflow Prevention Assembly Tester Registration.
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