Sex and aging
Learning Center
Klippel-Trenaunay syndrome
Main signs of this congenital disorder involve a red birthmark (port-wine stain), vein malformations, and overgrowth of tissues and bones.
Infant formula: 7 steps to prepare it safely
Properly preparing and storing infant formula is essential for your baby's nutrition.
Childhood vaccines: Tough questions, straight answers
When it comes to childhood vaccines, misinformation is common. Get the facts about vaccine safety from health experts.
Coronavirus disease 2019 (COVID-19)
Coronavirus disease 2019 (COVID-19) is an illness caused by the virus SARS-CoV-2. Learn more about the symptoms, risks and ways to protect yourself.
COVID-19 vaccines: Get the facts
Find out about the COVID-19 vaccines, the benefits of COVID-19 vaccination and the possible side effects.
Herd immunity and COVID-19: What you need to know
To protect groups of people over time, it helps to know what level of recovery or vaccination in a population makes it hard for a germ to spread.
COVID-19 travel advice
Concerned about COVID-19 when you travel? Follow these tips for safely flying, driving and staying at hotels.
Safety tips for attending school during COVID-19
Consider prevention strategies that you and your child's school can follow to help protect your child from the COVID-19 virus.
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.
Video: Baby's soft spots (fontanels)
A baby's soft spots (fontanels) close when the skull bones fuse together. See how.
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