瓶装多人份疫苗由于每剂的费用较低而常用于计划免疫 ,鉴于护士反映瓶装多人份乙型肝炎疫苗的剂数差别较大 ,作者根据免疫接种中注射器类型、疫苗类型、接种剂量三个特点测算了可节省的疫苗剂数。　　选择加拿大的不列颠哥伦比亚、安大略、魁北克三个地方的护士各 3名 ;注射器? Because of the lower cost per dose, bottle-filled multi-dose vaccines are often used for planned immunization. Given the large difference in nurses’ doses between bottled and multi-part hepatitis B vaccines, the authors determined the number of doses of vaccines used in vaccine immunization based on the type of vaccine, One feature measures the number of vaccine doses saved. Three Canadian nurses from British Columbia, Ontario and Québec, Canada; three syringes?