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What is the best definition of a flu pandemic?
A. A worldwide flu epidemic
B. A shot to prevent flu infections
C. A yearly economic downturn due to illness
D.A flu virus that comes from birds

Respuesta :

marceluyaiobong

Answer:

A

Explanation:

A pandemic is a disease outbreak that spreads across countries or continents. It affects more people and takes more lives than an epidemic.

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