Wednesday, September 2, 2020

How Effective is the Flu Vaccine?

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Since health officials started tracking it in 2003, effectiveness of the flu shot has varied from year to year, averaging at 40%.



from WebMD Healthhttps://img.webmd.com/dtmcms/live/webmd/consumer_assets/site_images/article_thumbnails/video/truth_about_flu_shots_video/650x350_truth_about_flu_shots_video.jpg https://ift.tt/3lHSFEw
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