Objetivos

Presentation slides that provide a more detailed knowledge of the regions in which they appear with more frequency of influenza virus.

Descripción

No matter how it may seem that the flu only appears once a year, it occurs during the entire year. In countr ies of temperate climate, more to the North and more the South, the cases are concentrated during winter. In tropical countries, however, the cases of flu are more distributed. See the fluctuation of the cases and understand why the vaccine has to be produced in two annual batches.

Detalles

Descriptors