Fig. 4From: Coverage, efficacy or dosing interval: which factor predominantly influences the impact of routine childhood vaccination for the prevention of varicella? A model-based study for ItalyInfluence of a catch-up programme on varicella incidence with a one-dose and two-dose strategy. Legend: 1D (one-dose), 2D (two-dose), VC (vaccine coverage 1st dose_2nd dose)Back to article page