Where did you get that statistic?
http://fox8.com/2017/12/04/health-experts-this-years-flu-vaccine-only-10-effective/
You better stock up on chicken soup this year. You might need it if you find yourself battling the flu.
According to a report in The New England Journal of Medicine, this year’s flu vaccine may only be about 10% effective against influenza A (H3N2).