What can kill you in less than 3 hours, and be treated with salt and clean water?

9 11 2010

No, it’s not a jellyfish sting, or lethal poison – the surprising answer is Cholera.

According to the CBC, over 7000 people have been infected in Haiti over the last week, resulting in the deaths of 500 individuals, many of whom could have easily been saved if Haiti had the proper infrastructure in place to treat them. There has been no cholera outbreak in Haiti for around 50 years, and the initial reaction was one of confusion as many Haitians just did not know how to avoid the disease (BBC News).

Directly from the World Health Organization website: “Cholera is an easily treatable disease. Up to 80% of people can be treated successfully through prompt administration of oral rehydration salts (WHO/UNICEF ORS standard sachet). Very severely dehydrated patients require administration of intravenous fluids. Such patients also require appropriate antibiotics to diminish the duration of diarrhoea, reduce the volume of rehydration fluids needed, and shorten the duration of V. cholerae excretion. Mass administration of antibiotics is not recommended, as it has no effect on the spread of cholera and contributes to increasing antimicrobial resistance. In order to ensure timely access to treatment, cholera treatment centres (CTCs) should be set up among the affected populations. With proper treatment, the case fatality rate should remain below 1%.”

Cholera is a disease which is believed to have originated in India, and which thrives in disaster-type situations like this one, such as floods, hurricanes or earthquakes which disrupt normal water treatment routines. The original outbreak is believed to have started approximately three weeks ago, but the number of cases have drastically increased since Hurricane Tomas struck last Friday, causing flooding across western Haiti. Unfortunately the bad news continues to grow, as one of the rivers which has been identified as a source of the epidemic is soon expected to overflow with excess water.

The best intervention strategy for reducing cholera deaths is through a combination of  controlling the disease spread through provisions of safe water, proper sanitation and immediate education about the disease to the affected population group. Infected individuals can be difficult to identify since most are asymptomatic, but insuring access to quick treatment to those persons who do show signs of the illness helps to prevent further spread and save many lives. Providing safe water and sanitation is a major challenge, particularly in emergency situations, however it has been shown to be the critical factor in reducing the number and spread of infections.

Perhaps this is another opportunity for the use of SODIS (solar disinfection of drinking water) to be taught and used as a weapon against the further spread of this deadly disease. This simple method of disinfecting drinking water can be readily achieved by filling a clear plastic bottle with collected water (which has low turbidity) and leaving it out in the sun for more than 6 hours. (Stay tuned for a more in-depth follow-up post about SODIS, how and when it works, and benefits of using it to disinfect water.)

Written by Sarah Topps – 2010

Read more: http://www.cbc.ca/world/story/2010/11/07/haiti-cholera-toll-rises.html?ref=rss#ixzz14l2qWRgI





SODIS

2 04 2009

SODIS, or solar disinfection of water, is a simple, low-cost, and effective method of household water treatment.

The technique can be learned easily and applied by almost anyone, including very young children, the elderly, the sick and the disabled. It works anywhere in the world where there is sunlight – so in other words, unless you are stuck on Antarctica between June and September, you can use it. (And if you ARE stuck in Antarctica in July, you probably have worse problems to deal with – and please let me know what internet provider you use!)

Check out SODIS here: http://www.sodis.ch/
Or watch this quick one-minute video  explaining how it works:

– Sarah Topps








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