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Asthma cases in Americans are about 75% higher today than they were in 1980.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
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Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.