Objectives

Presentation slides that provide a more detailed knowledge of the human resistance in relation to the virus and explains the causes of the incidence of influenza occur.

Description

Despite the flu being caused by a virus, different from most of the other infections, people did not acquire permanent immunity. Therefore, it is possible and often to catch the flu more than once, and vaccines against it have to be constantly reformulated. And this depends on the interaction between the immune system and the influenza.

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