I'll give to Mactep, understanding "Mist" as death.
The first diagram shows total mortality in Germany by month. You may be unaware of it, but mortality is a highly seasonal phenomenon, if you are far away from the equator - not only do pneumonias and complications of lung disease happen more often in the cold season, so too do cardiac events and certain cancer and cancer treatment complications.
The blue curve is the mortality expected in Germany under "normal" circumstances, without any unususual events, simple extrapolated from life expectancy and age of the population. The black curve are the actual mortalitity data - you can see the two unusuall (well, unusual compared to pre-flobal warming eras) hot summers of 2003, 2006 and 2010 as little spikes during the summer low - and you can see several nasty spikes during the winter seasons in 02/03, 04/05, 08/09, and 12/13. These were all years with exceptional influenza activity. I remember vividly caring for two influenza pneumonia victims in the winter of 08/09 on my small ICU, savong both just barely. 08/09 was the swine flu season, 12/13 the H1N1 season.
The grey shaded areas show the excess mortality ascribed to
influenza alone during each season, and the lower graph shows the number od excess deaths per season - blue is a conservative estimate, grey is a "most likely" estimate.
So all this was to refute Lianachan's post in which he said Prince couldn't plausibly have died "just" from the flu. So there
On to you Mactep - except if you didn't mean "death" when you wrote "Mist". In that case, the cigar goes to the boss (even though vaccination doesn't play a role her. It's the entire country that is in these graphs).