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	Podcast:		BrainStuff
	Episode:		Why Is a Universal Flu Vaccine So Difficult to Develop?
	Category:		Religion & Spirituality
	Duration:		00:08:27
	Publish Date:		2020-09-04 09:00:00
	Description:		Today's flu vaccines can absolutely prevent or lessen an influenza infection, but they have to be taken yearly and don't always work. Learn why -- and what researchers are doing about it -- in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers
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