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Cyanobacterial toxins

Anaemia
Arsenicosis
Ascariasis
Botulism
Campylobacteriosis
Cholera
Cryptosporiodiosis
Cyanobacterial toxins
Dengue
Diarrhoea
Dracunculiasis
Fluorosis
Giardiasis
Hepatitis
Hookworm infection
Japanese encephalitis
Lead poisoning
Legionellosis
Leptospirosis
Lymphatic filariasis
Malaria
Malnutrition
Methaemoglobinemia
Onchocerciasis
Polio
Ring Worm or Tinea
Scabies
Schistomiasis
Trachoma
Trichuriasis
Typhoid

Cyanobacterium is a photosynthetic bacterium of the class Coccogoneae or Hormogoneae, generally blue-green in colour and in some species capable of nitrogen fixation. It is also called blue-green alga. Some species of cyanobacteria produce toxins that effect animals and humans.

The disease due to it varies according to the type of toxin and the type of water or water-related exposure. Humans are affected with a range of symptoms including skin irritation, stomach cramps, vomiting, nausea, diarrhoea, fever, sore throat, headache, muscle and joint pain, blisters of the mouth and liver damage.

People are mainly exposed to cyanobacterial toxins by drinking or bathing in contaminated water. Some species form a scum on the water. Surface scum, when they occur, represent a specific hazard to human health because of their particularly high toxin contact.

Cyanobacterial toxins in lakes, ponds, and dugouts in various part of the world have been known to cause poisoning in animals and humans. They have been linked to illness in various regions throughout the world, including North and South America, Africa, Australia, Europe, Scandinavia and China. There are no reliable figures for the number of people affected worldwide.

Click here to learn for more information about waterborne diseases, dimension of the problem, transmission, prevention.

Sources:
http://www.who.int/water_sanitation_health/diseases/cyanobacteria/en/
Picture:
http://images.google.com/images?hl=en&lr=&rls=GGLD%2CGGLD%3A2005-12%2CGGLD%3Aen&q=cyanobacteria

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