What the flu does to your body, and why it makes you feel so awful

Flickr 13-2-2018 Flickr News 56
A healthy human T cell. Flickr/NIAID.com, CC BY-SA Another important cytokine that fights influenza infection is something called “tumor necrosis factor alpha.” This cytokine can have direct antiviral effects in the lungs, and that’s good.
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