Nutrition basics
Learning Center
COVID-19, cold, allergies and the flu: What are the differences?
Knowing if you have COVID-19, a cold, the flu or seasonal allergies isn't easy. Find out about the differences between these illnesses.
Guide to different tick species and the diseases they carry
Learn about different tick species and some of the diseases they may carry.
How you hear
Your ears enable you to gather and interpret sounds from the world around you.
Herd immunity and COVID-19: What you need to know
Get the facts about coronavirus and herd immunity.
How well do face masks protect against COVID-19?
Face masks can help slow the spread of coronavirus disease 2019 (COVID-19). Learn about mask types, which masks to use and how to use them.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
COVID-19 in babies and children
Know the symptoms of COVID-19 in children, what to do if your child appears sick and how to keep your family healthy.
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