Of course one can cherry pick information from the net but this is the immediate thing that came up when I asked if flu vaccines prevented flu:
"While vaccine effectiveness (VE) can vary, recent...
Well, well talking sense (although YOU saying something for a thousand times doesn't make it so! But in this case it is true).
However, you mention flu. Many think they've had flu but haven't...
Well, it's slowly happening - - - about 3 weeks ago, I saw about 3 stalls.
This pic., this Friday about 18:00(so setting up) had about half of one side of the soi half full of stalls-- again about...