“…A few of these studies investigated the rate of vaccination also in relation to gender [14,26,[28][29][30][31]34,37], age [14,[26][27][28]30,31,34,37], concomitant medical therapies [14,[28][29][30]37], disease duration and comorbidities [26,30,31,37], referral by a physician, indication for vaccination, educational levels [14,37] and knowledge attitude towards vaccination [14,27,29,31,34], vaccination settings such as rural vs. urban [14] and concomitant vaccination campaigns aimed to improve the vaccination rate [26,32,33,35], however these outcomes were variably reported.…”