Influenza and vaccines

My longtime friend has asked me to write a bit on influenza and vaccination guidelines.  As medical provider, I always strive to provide my patients with as much information as possible to allow them to make the best educated choices for their children based on the latest American Academy of Pediatrics (AAP) and Centers For Disease Control (CDC) guidelines.

In order for us to understand why the flu vaccine may prevent majority of flu illness in some years and be somewhat less effective in others, I will quickly go over the fascinating flu vaccine evolution.

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