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Learning Center
Can vitamin D protect against coronavirus disease 2019 (COVID-19)?
Find out what the research says about links between this key vitamin and the widespread viral infection.
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
Pink eye: How long is it contagious?
Many parents wonder how long pink eye (conjunctivitis) is contagious. Find out.
Concussion in children: What are the symptoms?
Whether your child's concussion is mild or severe, allow time to recover.
High cholesterol in children: How is it treated?
High cholesterol in children can lead to narrowed and hardened arteries, increasing the risk of heart disease later in life.
Eczema bleach bath: Can it improve my symptoms?
A diluted bleach bath may help treat chronic eczema.
How do COVID-19 antibody tests differ from diagnostic tests?
Antibody testing shows whether you've had the COVID-19 virus in the past. It's not the same as testing to see whether you have the virus now.
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