 As a result , we show the results of simulation where the influence of traveling across regions, which mean prefectures here, and of the choice of regions to vaccinate with priority , on the risk of infection spread.
<clarity>  As a result , we show the results of simulation where the influence of traveling across regions, which mean prefectures here, and of the choice of regions to vaccinate with priority , on the risk of infection spread.
 As a result , we show the results of the simulation where individuals travel across regions, which mean prefectures here, and of the choice of regions to vaccinate with priority , on the risk of infection spread.