Shortcomings of vitamin D-based model simulations of seasonal influenza. Author(s): Shaman J, Jeon CY, Giovannucci E, Lipsitch M|Journal: PLoS One|PMID: 21677774| January 2011 Seasonal variation in serum concentration of the vitamin D metabolite 25(OH) vitamin D [25(OH)D], which contributes to host immune function,…