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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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There are 60,000 miles of blood vessels in every adult human.
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Cyanide works by making the human body unable to use oxygen.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.