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

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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