Btec Level 3 Unit 1 P1

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•The influenza infection is extremely infectious: When a contaminated individual coughs, wheezes or talks, respiratory droplets are produced and transmitted into the air, and can then can be breathed in by someone close-by.

•A person who touches something with the infection on it and afterward touches his or her mouth, eyes or nose can get to be contaminated.

•An influenza pandemic, for example, the one in 1918, happens when a particularly harmful new flu strain for which there 's practically no immunity shows up and spreads rapidly from individual to-individual around the world.

•The flu spread through human carriers, shipping lines, and along trade routes.

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