First time winners: Alexandr Loginov (26yo), Quentin Fillon-Mallet (26yo), Yullia Dzhyma (28yo), Marte Olsbu Roiselend (28yo), and then Vittozzi at 23, Preuss at 24 and Davidova at 22.
Biathlon is a sport with a lot of psychology which tends to benefit some of the more mature athletes and sometimes raw talent does not even translate into good results.
And if we're going to bring into the discussion how many athletes missed out on medals due to a missed shot, we might as well count all of the people that "nearly won" the individual race if not for a single missed shot.