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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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The average office desk has 400 times more bacteria on it than a toilet.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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There are more sensory neurons in the tongue than in any other part of the body.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.