Stay away from harmful algae

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CDC
Green algae in water

Avoid Harmful Algae

Harmful algae and cyanobacteria, sometimes called blue-green algae, can produce toxins (poisons) that can make people and animals sick and affect the environment. Learn more about them to keep you, your family, and your pets safe.

Disease of the Week

You can get swimming-related illnesses if you swallow, have contact with, or breathe in mists or aerosols from water contaminated with germs. The most common symptoms are diarrhea, skin rashes, ear pain, cough or congestion, and eye pain.   


Children in swimming pool

Image of the Week

Microscopic image of extracellular diplococci

This photomicrograph of a Gram-stained urethral discharge specimen, demonstrated the presence of Gram-negative, extracellular diplococci. The presence of intracellular diplococci is diagnostically presumptive in the case of N. gonorrhoeae.

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COVID-19 Public Health Emergency

End of the Federal COVID-19 Public Health Emergency (PHE) Declaration


CDC is shifting from an emergency response to incorporating COVID-19 activities into routine public health practice. Most tools, like vaccines, treatments, and testing, will remain available. But, some tools, like certain data sources and reporting, will change.


>> Learn More


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Centers for Disease Control and Prevention

1600 Clifton Rd   Atlanta, GA 30329   1-800-CDC-INFO (800-232-4636)   TTY: 888-232-6348
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