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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.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.