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Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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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.
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Your heart beats over 36 million times a year.
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Medication errors are more common among seriously ill patients than with those with minor conditions.