Fig 4. Systematic comparison between vaccination strategies in reducing hospitalizations.

Each square in the heat maps depicts the percent difference in the number of hospitalizations between the two vaccination strategies (D_H = (H_a − H_e)/H_a; see text for explanation) for a given strength of social distancing (x-axis), vaccine deployment rate (κ, y-axis) and social distancing strategy (panels A-C). Color scale depicts the advantage of an elderly first strategy compared to an adults first strategy. Combinations higher than the median D_H are marked with a + sign. An example for the values underlying H_a and H_e for a 50% reduction in contacts can be found in S7 Fig.