What happened to the flu season in the U.S.?

02:54

In a normal year, tens of thousands of Americans die of the flu.

The 2020-21 flu season just ended with roughly 600 deaths in the U.S.

Regular colds also fell dramatically this year.

The data mirrors data fromaround the world. A variety of factors are at play.

CGTN's Karina Huber reports.

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