Some 1.5 million children under five die each year from sickness caused by water-borne diseases.
UNESCO: World Water Day 22 March 2010: Clean Water for a Healthy World
For example, a cheap, highly effective, timely--and adaptive--approach to malaria (and other mosquito-borne diseases) is available.
Bore wells then become improper areas to obtain drinking water and may carry water borne diseases.
The foundation also conducts health camps, where doctors screen villagers for everything from water-borne diseases to chronic illnesses.
By the late 1800s, European-borne diseases such as small pox had decimated the Haida population to triple figures.
The United Nations says there could be a second wave of deaths from the floods in Pakistan because of water borne diseases.
Ms Massai said water-borne diseases such as typhoid and diarrhoea may spread.
After a summer of record-high temperatures in the US in 2012, health officials are still dealing with the repercussions of mosquito-borne diseases.
However, many communicable water borne diseases such as diarrhea, cholera, typhoid, etc arise when bore wells are not adequately maintained and remained uncovered.
Petersen, as director of the division of vector borne diseases at the Centers for Disease Control and Prevention, is one of the foremost experts in the world on the condition.
When Paul Reiter, an expert on insect-borne diseases at the Pasteur Institute, begged to differ pointing out that malaria's range was shrinking and was limited by factors other than temperature he had an uphill struggle.
What health scientists are telling us is that climate change will bring increased asthma, more virulent allergens, medical emergencies from heat stress, the spread of water- and vector-borne diseases and increased severe weather events.
FORBES: What does Climate Change Have to Do With Health Care?
The evidence from unglamorous sewerage and hygiene projects is that helping an extra billion people in this way will do much to reduce diarrhoea, cholera and other water-borne diseases that strike the poor disproportionately.
"Malaria and dengue fever are two of the mosquito-borne diseases most likely to spread dramatically as global temperatures head upward, " said the Harvard Medical School's Paul Epstein in Scientific American in 2000, in a warning typical of many.
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