December may be a popular month for holidays and celebrations, but it's also notorious for something else: the flu.

Flu season — which is commonly considered to run from October to May — hits its peak in December, with cases tending to remain high through February.

For those who haven't had flu shots and want them, don’t panic, as there's still time to protect yourself before the peak of flu season.

What is the flu?

Influenza, more commonly referred to as the flu, is a respiratory infection caused by viruses.

Flu viruses pass through the air and enter your body via your nose or mouth. It may also be contracted from a contaminated surface.

How common is the flu?

Because of how easily it's contracted, the flu is incredibly common, especially in colder months of the year. Between 5% an

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