Emily Palmer
![Emily Palmer](/assets/img/authors/unknown.jpg)
Emily Palmer
flu immunity pandemic people spread virus worldwide
Flu is a virus that most people have no immunity or build-up to. It could spread worldwide and become a pandemic in 4 to 6 weeks.
Flu is a virus that most people have no immunity or build-up to. It could spread worldwide and become a pandemic in 4 to 6 weeks.
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