Quick Update 3/2/18
This year's flu vaccine effectiveness was 36% overall, 25% against H3N2, 67% against (H1N1)pdm09, and 42% against influenza B. Not that bad at all! This is interim data, BTW.
https://www.cdc.gov/mmwr/volumes/67/wr/mm6706a1.htm?s_cid=mm6706a1_w
Photo by Kelly Sikkema on Unsplash