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Contagious Diseases

Is It Flu, or Is It Covid?

With fall comes the onset of flu (influenza) season, but because many of the symptoms of Covid-19 and flu are similar, you may need...

Speaking of Wellness: The Continuing Quest for a Cold Vaccine

With all the focus lately on a vaccine against the coronavirus that causes Covid-19, many people have asked me why there’s still no vaccine for the common cold. After...

Do You Need a Measles Shot?

Amid the 2019 resurgence of measles in the U.S., several readers in their 50s and 60s asked us if they should get vaccinated, especially if they couldn’t remember having...