If there is direct contact with cyanobacteria toxin, skin and eye irritation may result, along with tingling or numbness of the lips, fingers and toes, and dizziness. Respiratory irritation may include coughing or wheezing. Long-term exposure to cyanobacteria toxins may result in liver damage or other chronic health effects. Symptoms of a neurotoxin HAB exposure may appear within minutes while symptoms of a hepatotoxin HAB exposure may take hours or several days to appear.
Mammals and birds exposed to cyanobacteria toxins may become ill or die. As other bacteria in the water break-down dead cyanobacteria, the dissolved oxygen in the water may become depleted, which may cause a fish kill.
Cyanobacteria bloom toxins at high concentrations can be directly harmful to fish and may cause fish kills as well. Dense bacterial blooms in the water column will block out sunlight necessary to other organisms to survive. Specific Groups Find information for animal owners, healthcare providers, veterinarians, and poison center professionals.
Communication Resources. To receive updates about harmful algae and cyanobacteria, enter you email address below: Email Address. What's this? Links with this icon indicate that you are leaving the CDC website. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
You will be subject to the destination website's privacy policy when you follow the link. CDC is not responsible for Section compliance accessibility on other federal or private website. This makes them more susceptible to algae-related poisoning.
Do not allow children to touch, swallow or swim in algae-affected water and always supervise children when swimming. Avoid contact with algae-affected water, especially where discoloured water and visible scums are present.
These scums are a build-up of algae that settles along the edge of the water, where you are more likely to make contact. Follow advice on any harmful algae information signs present, and avoid contact with the water until authorities advise there is no longer a risk. If you suspect that your local waterway is affected by harmful algae, contact the local waterway manager for further advice.
You can find out more about affected waterways via Emergency Victoria. If you make contact with affected water, immediately leave the water.
Remove any traces of algae by thoroughly washing and rinsing your skin and hair, contaminated clothes and wetsuits in clean water. It is best to avoid direct contact with affected water including swimming and any other water sports.
Pets can be poisoned from contact with or ingestion of harmful algae. Do not let your animals swim in algae-affected areas, walk along banks where scums have accumulated or drink algae-affected water. If your pet does come into contact with affected water or scums, wash them thoroughly with fresh water before drying so they do not swallow algae while grooming their fur.
If you are a livestock owner, continuously check water supplies for harmful algae, and keep livestock away from algal blooms. Any fish caught from algae-affected waters should be washed in clean water, gilled and gutted.
Do not eat any shellfish such as pipis, mussels, oysters, yabbies or crayfish from algae-affected water, as they are more likely to accumulate dangerous levels of algal toxins. When algal blooms die and start to break down they use up oxygen in the water, which creates an environment that can suffocate fish.
If you see fish that are dead, dying or swimming erratically, do not touch or eat them. If your local water business supplies your drinking water, they will manage any algae risks.
If you have any concerns about the quality of your drinking water supply, contact your local water business. If you use a private drinking water supply, you can prevent algae growing by sealing your water tank and ensuring the pipes or fittings do not receive sunlight.
Further information on private drinking water supplies can be found on the Victorian Department of Health and Human Services website. Do not use untreated algae-affected water for drinking, showering or washing. Boiling algae-affected water does not remove toxins. Information related to irrigation and livestock can be found on the Agriculture Victoria website. Keeping pets- and people- safe from toxic algae.
Two years ago, our family planned to take our Yellow Labrador puppy Fiona to Lake Needwood near our home in Rockville, Maryland for a swim. Read more Skip to main content. Nutrient Pollution. Contact Us.
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