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Vaccines prevent between 2.5 and 4 million deaths every year.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.