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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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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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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.