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Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
COVID-19 variants: What's the concern?
The virus that causes COVID-19 has changed over time, which has affected prevention, diagnosis and treatment of COVID-19.
Anxiety disorders
Learn the symptoms of this mental health condition, and ways to manage worry and fear that interfere with your daily activities.
Chickenpox
Learn more about preventing this once-common childhood illness. Also, find out how to recognize and manage it.
Brain stereotactic radiosurgery
This procedure delivers precise radiation therapy to treat brain tumors and other brain conditions.
Tricuspid valve repair and tricuspid valve replacement
These heart surgeries treat tricuspid valve regurgitation and stenosis and Ebstein anomaly, a type of congenital heart defect. Learn how they're done.
Baby teeth: When do children start losing them?
Losing baby teeth is a major childhood milestone. Find out what to expect.
Type 1 diabetes
Learn about the symptoms, causes, treatment of this chronic condition in which the pancreas produces little or no insulin.
Heart disease
Learn about symptoms, causes and treatment of cardiovascular disease, a term describing a wide range of conditions that can affect the heart.
Fetal alcohol syndrome
Fetal alcohol syndrome results from alcohol exposure during the mother's pregnancy, causing irreversible brain damage and growth problems in the child.
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