What causes the winter flu and how does it differ from other types of flu and colds? | Decomplicated

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During the seasonal winter months, cases of flu skyrocket. Many vulnerable members of society are put at risk, pushing healthcare services to the brink.

You may have even been offered a flu shot to curb the infection rate. But why is winter flu seasonal? What does it need to survive? And does everyone need to take the vaccine? This is Decomplicated.

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