Believe me, I’m glad you have stayed “flu free” for so long. You don’t want it. However, there is no cure or substance that will rid you of the virus once it enters your system. If you have managed to avoid it, there could be other factors that have kept you from acquiring the virus. However, Vitamin D-3 is no cure for the flu, nor is it an immunogen.
It is a highly successful immunogen. That is why one doesn’t get flu or colds in the summer. Flu vaccine is less effective at preventing flu. Sometimes it is the wrong vaccine due to a bad guess as to what type is coming our way. Around here, among the people I know who get the shots several also get the flu every year. If you get off on that needle then have at it. I will have fewer colds and flu than you will through the years. So far it is none in 9 years, ditto my family and friends for however long they have been doing the vitamin D.