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Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.