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Flu shot: Your best bet for avoiding influenza
Get answers to your flu vaccine questions, including whether the vaccines are effective, what forms are available and what side effects you can expect.
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.
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.
Teen suicide: What parents need to know
Understand what makes teens prone to suicide, and learn what you can do to prevent it.
Types of psoriasis
Learn to identify types of psoriasis, such as guttate psoriasis and scalp psoriasis, by appearance.
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