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MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). It was built as an online health information resource for patients and their families and friends.

MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.

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COVID-19 Testing - National Library of Medicine

... test you buy has been authorized by the U.S. Food and Drug Administration (FDA). Order free self- ... for your household, if you live in the U.S. The tests are from the U.S. government. Even ...

Smallpox - National Library of Medicine

... who do recover may have severe scars. The U.S. stopped routine smallpox vaccinations in 1972. Military and ... risk groups continue to get the vaccine. The U.S. has increased its supply of the vaccine in ...

Burns - National Library of Medicine

A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires ...

Food Labeling - National Library of Medicine

All packaged foods and beverages in the U.S. have food labels. These "Nutrition Facts" labels can help you make smarter food choices and eat a healthy diet. Before you read the ...