https://www.cnn.com/2020/10/21/health/flu-shot-effectiveness-sleep-wellness/index.html
By Emmet Lyons and Sandee Lamotte, CNN
Updated 4:13 AM ET, Wed October 21, 2020
We all know how much better we feel after a good night's sleep.
It turns out that sleep may be vital to arm us in the fight against influenza and Covid-19.
Medical professionals are recommending that people make sure to get their flu shots this year, in part because some Covid-19 and flu symptoms are similar. A flu shot reduces the likelihood that your symptoms (if you get sick) are from the flu.
To make that flu shot effective, sleep specialist Matthew Walker, the bestselling author of "Why We Sleep," told CNN's Christiane Amanpour practicing "good sleep hygiene" is important.
Insufficient sleep in the week before getting a flu shot can lead to the production of less than 50% of the normal antibody response -- a reaction that would render the flu shot largely ineffective, Walker told Amanpour. Walker specializes in the relationship between sleep and human health at the University of California, Berkeley.
Walker cited a 2002 study published by the Journal of the American Medical Association, and a 2020 study in the International Journal of Behavioral Medicine supports those findings, suggesting that sleep on nights prior to vaccination could be critical to vaccine efficacy.
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