public health response to algal blooms in florida...public health response to algal blooms andrew...
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Public Health Response to Algal Blooms
Andrew Reich, Bureau of Environmental Health
In Florida
Gulf of Mexico HAB Bulletin: NOAA 8/13/18 Lake O’, Sentinel 3 Image: NOAA 7/10/18
Karenia brevis Red Tide Cyanobacteria Bloom
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Press Reports
TC Palm (USA Today) 8/9/18
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Karenia brevis Red Tide
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Ben Depp, National Geographic 8/8/18
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Red Tide in Florida?
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floridapolitics.com WIKIMEDIA COMMONS
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Red Tide in Florida?
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“Other” Red Tides
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California. Italian Alps
Hong Kong Mexico China
Woods Hole Oceanographic Institution
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Distribution of HABs in the US
Source: U.S. National Office for Marine Biotoxins and Harmful Algal Blooms
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Freshwater: Cyanobacteria
• Microcystis, Anabaena, Cylindrospermopsis
Oscillatoria, Aphanizomenon
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News-Press (USA Today) 7/14/18 Cape Coral, Florida
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Red Tide vs. BG algae
Compare
• Single Cells
• Aquatic Organisms
• Photosynthetic
• Produce Toxins
• Naturally Occurring
• Do not accumulate in
fish fillets
Contrast
• Marine vs. Freshwater
• One vs. Many Species
• One vs. Many Toxins
• Aerosols vs Not Airborne
• Unknown why bloom vs.
known association with
nutrients
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Florida Red Tide
Positive Samples, 1954 to Present
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Approved Shellfish Harvesting Areas
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Red Tide Events
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Red Tide Events
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Red Tide Events
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Red Tide Events
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Red Tide Sampling 1954 - 2013
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NOAA Gulf of Mexico
• Harmful Algal Bloom Bulletin
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HAB Bulletin
• Potential for Respiratory Irritation
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PbTx
Bubble-mediated Transport
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Mote Marine Laboratory and Aquarium
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Mote Marine Laboratory and Aquarium
Sarasota County: Inland Transect Sampling Locations
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Cyanobacteria/Blue-Green Algae
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Chad Gillis, Fort Myers News-Press
Sept. 14, 2018
Shepard Park on the St. Lucie River near downtown
Stuart June 12, 2018. (Allen Eyestone / The Palm
Beach Post
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• Cyanotoxins: microcystins, anatoxins,
cylindrospermosins, etc.
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• No taste or smell
• Heat, acid stable
• Toxic
Rosen et al, 2017
Cyanobacteria/Blue-Green Algae
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Cyanobacteria Satellite Imagery
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National Aeronautics and Atmospheric Administration, 8/10/18
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Lake Okeechobee Waterway
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Signage
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Direct Skin Contact
Potential Exposure Pathways
Incidental
Ingestion
Drinking
Water
Inhalation of
Aerosols
Ingestion of
Food
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Hydrogen Sulfide Testing
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www.floridahealth.gov/algaeblooms
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Health reports
Emergency Department Visits
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Health reports
Florida Poison Control Exposure Calls
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Health reports
Florida Poison Control Exposure Calls
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Department’s Web Site
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• Some blue-green algae produce chemicals called cyanotoxins.
• At high concentrations, cyanotoxins can affect the liver, nervous
system and skin.
• Most problems occur when substantial amounts of water containing
high toxin amounts is swallowed such as when people drink
untreated surface water.
• Besides drinking the affected surface water, it is difficult to get
cyanotoxins into the body as they do not become easily airborne
and do not pass through the skin readily.
• Most people avoid a blue-green algae bloom because they tend to
be icky-looking and smelly.
Cyanobacteria/Blue-Green Algae Blooms and Public Health
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Guidance
What are some tips for avoiding cyanobacteria/blue-
green algae?
Avoid swimming in or drinking water containing blue-green algae. It
is best not to come in to contact with water in areas where you see
foam, scum, or mats of algae on the water.
What should I do if I come in contact with
cyanobacteria/blue-green algae?
If you come into contact with an algae bloom, wash with soap and
water. If you experience an illness, please contact your healthcare
provider.
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Department’s Web Site
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• People in coastal areas can experience varying degrees of eye,
nose and throat irritation.
• When a person leaves an area with a red tide, symptoms usually go
away.
• People with severe or chronic respiratory conditions such as asthma
or chronic lung disease are cautioned to avoid areas with active red
tides.
• If you experience irritation, get out and thoroughly wash off with
fresh water. Swimming near dead fish is not recommended.
• Wearing a particle filter mask may lessen the effects, and using
over-the counter antihistamines may decrease symptoms.
• Red Tide Blooms
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Outreach/Education
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Dodge it
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Outreach Cards
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FWC Web Site
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http://myfwc.com/research/redtide/
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FWC Web Site
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http://myfwc.com/REDTIDESTATUS
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FDEP Web Site
https://floridadep.gov/AlgalBloom
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FDEP Web Site
https://floridadep.gov/AlgalBloom
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